Kryptonite Evolution 1016 Integrated Chain LockThe Evolution 1016 Integrated Chain from Kryptonite is a heavy duty solution to keeping your bike secure. Constructed from 10mm six sided chain links made from 3T Manganese steel for massive amounts of strength and durability, with a unique End Link Design that secures chain to hardened deadbolt to eliminate critical vulnerability. It features a patented, reinforced oval crossbar lock head, sliding dustcover to protect the cylinder life, 3 stainless