Kryptonite KryptoLok Series 2 912 Integrated Chain: 4' (120cm)KryptoLok Chain Locks offer moderate security in a convenient package allowing for flexibility locking up for a few hours in suburban areas. 9mm four sided chain links made from 3T manganese steel 47. 25 (120cm) chain length Weather resistant nylon sleeve prevents scratches to painted finishes and compact coiling provides for easy carrying Pin less link design secures chain to a hardened deadbolt and offers no weak link in the chain Includes 2