The lock cylinder uses advanced Switzerlandwith anti-drilling piece, onlytechnology0.3-0.6mm thickness and snaked shaped whichcan effectively prevent technical stealing.
 

The lock body is made of 9mm square specialhardened steel with heat treatment. lts strong andhigh toughness well prevents from being sheared,thumped, sawed and drilled. The diameter andlength are both able to be customized.
 

The lock head is fully enclosed design, wrappedwith hardened steel under the plastic cover, veryhard to be damaged and thumped. Updated theinner structure of the lock head and anti-theftsystem, this chain lockis the strongest in our range,can achieve ART 3.