what's to stop a thief from just unbolting it?

Nothing is ever completely theft-proof. If a thief really wants something, they will get it. However, anything you can do to make this as noisy and time-consuming as possible helps deter would-be thieves from even bothering because there are likely much easier targets in your area. To get to the bolts, they'd have to contend with removing the cover, removing the hammered-on caps and ball bearings under those, and then unbolting the screws. It would take them a lot of effort and a really long time, and they'd likely make a lot of noise doing it. Unless you've got something really valuable and you don't have any neighbors, I don't see any thieves bothering with this stuff. This is about as safe as you can get your bike chain anchors.

How difficult is it to remove in order to change location? (example, moving to a new place)

I think if you pound the metal bolt covers in to place after installation via directions that removal might be challenging. I have not moved mine after it was installed, this is merely speculation.

how much damage is caused from installing this device?

I embedded it into freshly laid concrete with the provided bolts. I didn't have to drill the holes, but it hasn't caused any damage the way I installed it. Hope that helped, sorry!

Is the ring one continuous piece of metal, or is it sort-of a C shape, with the ends of the C being hidden in the base?

It is definitely ring-like, but I think the base part was welded to the C part.

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Kryptonite Stronghold Anchor, Heavy Duty Bike Ground and Wall Lock Mount | Hardened 16mm Carbon Alloy Steel Shackle, Permanent 6.10 lb Security Point for Bicycles, E-Bikes, Scooters, and Trailers

Kryptonite Stronghold Anchor, Heavy Duty Bike Ground and Wall Lock Mount | Hardened 16mm Carbon Alloy Steel Shackle, Permanent 6.10 lb Security Point for Bicycles, E-Bikes, Scooters, and Trailers

Product ID: 2373625

Details

Brand
Kryptonite
Item dimensions L x W x H
16 x 10.8 x
Lock Type
Ground Anchor
Material
Carbon Steel
Special Feature
16mm hardened

🔒16mm hardened carbon alloy steel shackle

🧱5/8” cement anchor bolts for permanent installation

🛠️Includes 2 masonry bits for precise mounting

$235.85

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Description

🔐 Lock it down like a pro — your ride’s fortress awaits!

SLEEK SAFE DESIGN - Low-profile shackle lays flat when not in use, preventing trips and damage.
UNBREAKABLE SECURITY - Hardened 16mm carbon alloy steel shackle resists cutting and tampering.
ALL WEATHER DURABILITY - Designed for both indoor and outdoor use, built to withstand the elements.
INSTALLATION MADE EASY - Comes with two masonry bits for professional-grade mounting without guesswork.
PERMANENT PEACE OF MIND - 5/8” cement anchor bolts ensure a rock-solid, immovable lock point.

The Kryptonite Stronghold Anchor is a heavy-duty, permanent bike lock mount featuring a 16mm hardened carbon alloy steel shackle and 5/8” cement anchor bolts for secure installation on concrete surfaces. Ideal for bikes, e-bikes, scooters, and trailers, it includes masonry bits for easy mounting and a low-profile design that’s safe for foot and vehicle traffic. Trusted by professionals and urban riders alike for unmatched security indoors or outdoors.

Specifications

ASIN	B000LF903M
Additional Features	16mm hardened Carbon Alloy Steel Shackle
Best Sellers Rank	#230,647 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #133 in Bike U-Locks
Brand Name	Kryptonite
Color	Black
Control Method	App
Controller Type	Hand Control
Customer Reviews	4.5 4.5 out of 5 stars (804)
Finish Types	Concrete
Global Trade Identification Number	00720018330202
Included Components	[Masonry bits for installation]
Item Dimensions	16 x 10.8 x 3.5 inches
Item Type Name	LOCK
Item Weight	2.7 kg
Lock Type	Ground Anchor
Manufacturer	Kryptonite
Manufacturer Part Number	57-9776
Manufacturer Warranty Description	Manufacturer Warranty
Material Type	Carbon Steel
Model Name	Kryptonite Stronghold Anchor
Model Number	720018330202
Number of Items	1
Number of Packs	1
Number of Pieces	1
Recommended Uses For Product	Securing bicycles and vehicles
Shape	Rund
Style Name	Ground Anchor
UPC	720018330202
Unit Count	1 Count

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