Securit Locks made by Abus. Bars links case and supporting elements made from temper hardened steel for cut and torsion resistance. Key cylinder resists extreme picking attacks. Silicone cover on the lock body provides soft-touch coating to prevent damage to bicycle finish. Folding style allows for compact transportation. Convenient rattle-free carrying case mounts with Velcro straps or to bottle cage mounts. Two keys are supplied with the lock