ULC plug-in chain. This strong 100 cm long insert chain is made of hardened steel and has a 10 mm thick pin. The chain is ART 2 approved when used in combination with framelocks from: LYNX (410760 and 410760), Trelock, annd the ever so popular AXA BLOCK XXL*. The cover of the chain is in all-black hardwearing synthetic material withblack stitching (no print on fabric!) - hence a lower price