The Kryptonite Evolution 1016 Integrated Chain is Sold Secure Gold & is designed for use in moderate to high crime areas. The hardened triple heat-treated boron manganese steel chains include 10mm six-sided links. The integrated chains secure with a new patent-pending integrated Evolution series 4 lock head. The Evolution 1016 Integrated Chain is enclosed in a nylon-webbing sleeve to protect your paint from scratches & allow for easy portability & tight coiling during storage. Comes with 3 stainless steel keys including a lighted LED key with replaceable battery & 2 new, ergonomic I keys Approved to Gold Sold Secure standard Dimensions: 10 mm X 160 cm