Brand | Kryptonite |
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Special Feature | 16mm hardened Carbon Alloy Steel Shackle |
Lock Type | Ground Anchor |
Item Dimensions LxWxH | 16 x 10.8 x 3.5 inches |
Material | Alloy Steel |
Recommended Uses For Product | Bike Lock |
Style | Ground Anchor |
Color | Black |
Number of Pieces | 1 |
Finish Type | Concrete |
Included Components | Kryptonite 57-9776 |
Controller Type | Hand Control |
Item Weight | 2.7 Kilograms |
Control Method | App |
Item Package Dimensions L x W x H | 15.94 x 10.91 x 3.39 inches |
Package Weight | 3.08 Kilograms |
Brand Name | Kryptonite |
Warranty Description | Manufacturer Warranty |
Model Name | Kryptonite 57-9776 |
Suggested Users | "", Ammunition & Magazine Pouches & Holders |
Number of Items | 1 |
Manufacturer | Kryptonite |
Part Number | 57-9776 |
Model Year | 2015 |
Outer Material | aluminum |
Size | One Size |
Sport Type | Cycling |
Other Sellers on Amazon
86% positive over last 12 months
Kryptonite 16mm Bicycle Stronghold Anchor Bike Lock , Black
Purchase options and add-ons
Brand | Kryptonite |
Special Feature | 16mm hardened Carbon Alloy Steel Shackle |
Lock Type | Ground Anchor |
Item Dimensions LxWxH | 16 x 10.8 x 3.5 inches |
Material | Alloy Steel |
About this item
- PERMANENT LOCKING POINT for use indoors or outdoors to keep vehicles and bicycles safe
- Attach to solid concrete ground/walls, or to truck/trailer beds
- 16mm hardened CARBON ALLOY STEEL SHACKLE
- 5/8” cement anchor bolts installed directly into the cement
- Includes 2 MASONRY BITS (1- initial pilot hole, 1-final moly-bolt diameter)
- Steel shackle lays flat within domed body when not in use, making it safe to walk or drive over
- Recommended for both residential and commercial applications
- Product dimensions: 7.5” (19cm) anchor diameter, 1.65” (4.2cm) anchor height
- Permanent locking point for use indoors or outdoors to keep vehicles and bicycles safe
- Attach to solid concrete ground/walls, or to truck/trailer beds
- 16mm hardened carbon alloy steel shackle
- 5/8” cement anchor bolts installed directly into the cement
- Includes 2 masonry bits (1- initial pilot hole, 1-final moly-bolt diameter)
- Steel shackle lays flat within domed body when not in use, making it safe to walk or drive over
- Recommended for both residential and commercial applications
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Top Brand: Kryptonite
From the manufacturer
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Permanent Locking PointFor use indoors or outdoors to keep vehicles and bicycles safe |
Residential and Commercial ApplicationsAttach to solid concrete ground/walls, or to truck/trailer beds |
Kryptonite Lifetime Warranty |
10/10Rated 10 on our Security Scale making this a secure solution in any area 24/7. |
Product Description
PERMANENT LOCKING POINT for use indoors or outdoors to keep vehicles and bicycles safe. Attach to solid concrete ground/walls, or to truck/trailer beds. 16mm hardened CARBON ALLOY STEEL SHACKLE. 5/8” cement anchor bolts installed directly into the cement. Includes 2 MASONRY BITS (1- initial pilot hole, 1-final moly-bolt diameter). Steel shackle lays flat within domed body when not in use, making it safe to walk or drive over. Recommended for both residential and commercial applications. Product dimensions: 7.5” (19cm) anchor diameter, 1.65” (4.2cm) anchor height.
Product information
Technical Details
Additional Information
ASIN | B000LF903M |
---|---|
Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #186,430 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #103 in Bike U-Locks |
Date First Available | January 30, 2007 |
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Seatylock Mason Diamond Bike Lock Advantages and Features
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the sturdiness and quality of the powersports vehicle part. For example, they say it's a very solid product, the anchor seems quite sturdy, and it'll hold really well. That said, some complain about the size, saying that the drill bit isn't 100% fit. Opinions are mixed on ease of installation.
AI-generated from the text of customer reviews
Customers like the sturdiness of the powersports vehicle lock. They mention that it's a very solid product, the anchor seems quite sturdy, and it will hold really well. Some say that it was an ordeal to install, but it'll be secure to use. Overall, customers are happy with the quality and durability of the lock.
"...But hardened eye bolts are hard to find. Nice strong forged ones, sure, but they're not hardened and are very saw-able...." Read more
"...There is nothing flimsy at all with the entire construction, even the plastic cap was thick, so thick that a heavy vehicle can easily drive over it..." Read more
"Positives: Very solid product. Quality build...." Read more
"...The device feels pretty secure and combined with a big heavy kryptonite lock and chain will definitively make taking the bike a lot more difficult..." Read more
Customers like the quality of the powersports vehicle part. They say it's a well-thought-out product, unique, and a good visual deterrent for would-be thieves.
"...The finished installation looks nice - about as elegant as one can expect a chain on a floor to be - and feels very solid...." Read more
"...The anchor is actually a very nice, clean looking piece once installed. I'm very happy to have a permanent locking location right outside my door...." Read more
"Love the product. Bought five. Was very disappointed with the poor quality drill bit...." Read more
"...I fixed the hole, reassembled the fastener, and got it all done. It looks great...." Read more
Customers are mixed about the ease of installation. Some mention that it's pretty straight forward, while others say that the instructions are garbage and the job becomes increasingly difficult.
"...Final impressions: excellent product, easy to follow instructions and all materials needed were supplied for a successful installation." Read more
"...Instructions are GARBAGE--included ones don't give depths or hints...." Read more
"...My installation went very well. Allow yourself some time, follow the directions and your install will go very well." Read more
"...Installation is pretty straight forward. Hammering in the sleeve/screw combos was a little sketchy though...." Read more
Customers have negative opinions about the size of the bolts. They mention that the bolt is much bigger than the picture, and it's difficult to insert them into the hole. Some customers also mention that they are too small to get any decent leverage.
"...They fit fine but are just too small to get any decent leverage...." Read more
"...My first impressions: it was big, heavy and felt like it was over engineered...." Read more
"...Aside from all that, great product. It's attractive, has plenty of room to loop a huge chain or U-bolt through, and DEFINITELY isn't coming back out..." Read more
"This thing is huge. I found a large, heavy package on the porch and couldn't recall ordering anything that big or heavy...." Read more
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Top reviews from the United States
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Before buying this Kryptonite unit I had considered digging a little hole in the floor, pouring in some cement, sinking an eye bolt in that, and waiting for it to set and cure. But hardened eye bolts are hard to find. Nice strong forged ones, sure, but they're not hardened and are very saw-able. So I thought of buying a decent hardened chain and pouring the concrete over most of that, leaving just a few links sticking out. But the chain would cost more than this unit. So I ended up just getting this thing and not pouring any concrete.
The included drill bits are good. I tried drilling first with my conventional 1/2" drill, and it worked for a while, but had a gawdawful time getting through whenever it hit a rock; and since I was drilling through concrete, of course there were loads of rocks. So I bought a Harbor Freight 1/2" hammer drill, the cheapest one (about $20). While nowhere near as substantial a piece of machinery as my faithful old non-hammer drill, it worked just fine. It needs some downward pressure but not an unholy amount; let the drill do the work. It took me no more than five minutes of actual drilling time to do all three holes. Your mileage may vary; there's concrete, and then there's concrete. Some concretes are more annoying than others.
The inserts are designed to grab in a hole maybe 1.5" deep. My outdoor slab of concrete is thinner than that, not much over an inch. It was poured in the 1920s, when they perhaps weren't so profligate with even cheap materials as they are now. So all three holes went all the way through. While that certainly made it easy to clean the dust out - it all fell through the bottom - it wasn't obvious that there would be enough material for the inserts to grab. I went ahead anyway, and it all seems to have worked OK.
A problem - it is essentially impossible to drill three holes in exactly the right places. This is true for all materials and is just the way that conventional drill bits work; when they start to cut they don't do it absolutely symetrically, and the hole wanders. Drilling one hole as a pilot and then widening it with a larger drill makes things even worse; both bits will wander off center when they start cutting, and you'll be even farther off. Which is one reason why in machine shop practice a drilled hole is not considered a high-precision feature. Reaming and boring are precision operations, drilling is not. So in general, holes drilled in concrete won't end up where you want them without spot drilling and some elaborate fixturing which this kit doesn't have. So my holes were off a bit. Actually, they were off rather a lot. I managed to get the screws all started anyway; start them all with the plate not touching the ground (don't tighten one, then expect to get the others to line up, because they won't). Once they're started they'll probably sock down OK. If it hadn't worked, I could have tried again, moving the whole thing a few inches to one side or the other ... or I could have done it the long way, hammering holes through the floor, digging three little pits (or one bigger pit), filling them with fresh concrete, putting coupling nuts, studs and washers in the wet concrete, and lining them all up with the plate before it sets. This method wouldn't use inserts at all. But as it turned out Plan B wasn't needed.
The included "L"-shaped hex wrenches are hardly adequate. They fit fine but are just too small to get any decent leverage. I used hex bits and a 1/2" drive flex handle to really torque the lil' buggers down.
The finished installation looks nice - about as elegant as one can expect a chain on a floor to be - and feels very solid.
I replaced the two flathead screws with stainless ones - just ordinary hardware-store specimens, not hardened or high-strength. They just hold the plastic cover down; it's the three bolts sunk into the concrete which make this secure.
My motorcycle seems happy with the whole arrangement, except for being outdoors, and we can't blame Kryptonite for that.
Reviewed in the United States on December 8, 2019
Top reviews from other countries
Ich finde es super, dass der Anker sogar mit den notwendigen Bohrköpfen kommt (1x kleinerer Primer-Bohrkopf zum Vorbohren, 1x dicker 16mm Bohrkopf für die Metalldübel).
Die mitgelieferten Sechskantschlüssel sind zu kurz. Der Anker ist damit nicht montierbar, man bekommt die Schrauben nicht zugezogen. Idealerweise hat man ein Rohr um eine Hebelwirkung zu erzielen, oder eine Impact Drill mit einem guten Hex Bit.
Reviewed in Germany on November 25, 2023
Ich finde es super, dass der Anker sogar mit den notwendigen Bohrköpfen kommt (1x kleinerer Primer-Bohrkopf zum Vorbohren, 1x dicker 16mm Bohrkopf für die Metalldübel).
Die mitgelieferten Sechskantschlüssel sind zu kurz. Der Anker ist damit nicht montierbar, man bekommt die Schrauben nicht zugezogen. Idealerweise hat man ein Rohr um eine Hebelwirkung zu erzielen, oder eine Impact Drill mit einem guten Hex Bit.
En moins d'une heure tout était installé. Mon petit tips: pour enfoncer les billes dans les têtes des vis, je les ais scotchées, ça tenait plus facilement en place.
A few important points:
1. Use the correct tools. We have a pretty heavy duty drill but decided to rent a hammer drill instead. Absolutely no problem drilling the holes. Easy.
2. The holes must be vertical in all directions. Have another person confirm that you are straight up and down N/S and E/W.
3. Drill the initial holes one at a time as per the directions. Put tape on your drill bit so you know how deep to drill. You don’t want to go all the way through the concrete if possible, keeps moisture out.
4. We blew out each hole after drilling with compressed air. There will be A Lot of dust down there and if you don’t blow it out you will have trouble. Our ShopVac did not get it all.
5 We added Weldbond to the housings before putting them in place. Probably not necessary but we wanted to ensure the housings couldn’t slip out if there was a problem drilling.
Reviewed in Canada on October 7, 2020
A few important points:
1. Use the correct tools. We have a pretty heavy duty drill but decided to rent a hammer drill instead. Absolutely no problem drilling the holes. Easy.
2. The holes must be vertical in all directions. Have another person confirm that you are straight up and down N/S and E/W.
3. Drill the initial holes one at a time as per the directions. Put tape on your drill bit so you know how deep to drill. You don’t want to go all the way through the concrete if possible, keeps moisture out.
4. We blew out each hole after drilling with compressed air. There will be A Lot of dust down there and if you don’t blow it out you will have trouble. Our ShopVac did not get it all.
5 We added Weldbond to the housings before putting them in place. Probably not necessary but we wanted to ensure the housings couldn’t slip out if there was a problem drilling.