Chain, Sleeve and Loop, hardened steel chain with fabric sleeve to prevent contact damage. Square-shaped links provide top security. Security chains from ABUS are ideal to secure high-value items that can't be locked with a common lock. Security chains are made with a special anti-corrosion coating which makes them ideal for outdoor use. The links are not round like on common chains, but are square-shaped which is a lot more effective against attacks with tools. The chains also feature a nylon sleeve to prevent paint work and chrome from scratches and damage.