Lightweight and integrated, this is a hardened triple heat-treated boron manganese steel chain made with 7 mm four-sided links.
The Kryptonite Keeper chain lock secures with a new integrated lock head. The end pin-link design secures the chain with a hardened deadbolt and offers great holding power against attacks.
The high security disc-style cylinder is pick and drill resistant, while chain links are enclosed in a nylon-webbing sleeve to protect paint from scratches. Each chain comes complete with two ergonomic ‘I’ keys, which make opening a disc-style cylinder much smoother.
European Testing Agencies
In Europe, independent testing agencies put locks through their paces to see how secure they really are, or in some cases are not. Kryptonite holds more than 45 approvals at Sold Secure (UK), ART (NL), VdS (DE), N.F. (FRA), Classe SRA (FRA), SSF (Sweden) and VAREFAKTA (Den). These agencies attacked products with every bit of malice the testers could throw at them and they still held up.