Permanent, low profile locking point for indoor or outdoor use to keep bicycles, e-bikes & other vehicles secured14 mm special carbon alloy steel shackle provides increased resistance against cut attacks,Heavy duty HARDENED STEEL BASEPLATE offers great resistance against pull attacks,Cement anchor bolts (supplied) install directly into cement (includes masonry bits),Weatherproof,Compatible with Kryptonite chains and cables,Recommended for both residential and commercial applications,Lifetime warranty,Sold Secure Bicycle Silver.