12mm square link Cro-Mo steel is formed into narrow links that provide exceptional strength while greatly reducing any leverage a potential thief may apply.
The lock body is made from hardened steel and uses a double bearing mechanism and reinforced cylinder plates to make it incredibly resistant to drilling and picking.
The lock closure shackle uses hardened Cro-Mo steel to continue the highly secure features.
Thatcham approval is equivalent to Sold Secure Gold standards ensuring you have the best coverage.