Kryptonite Keeper 712 Integrated Chain Lock

7mm four-sided chain links made from 3t MANGANESE STEEL Patent-pending END LINK DESIGN secures chain to hardened deadbolt eliminating critical vulnerability Hardened DEADBOLT DESIGN provides extra holding power HIGH SECURITY DISC-STYLE CYLINDER is pick and drill resistant Includes 2 NEW ERGONOMIC "I" KEYS Durable WEATHER-RESISTANT nylon sleeve prevents scratches Key Safe Program Product dimensions: 47.3” (120cm) chain length Product weight: 3.75 lbs (1.70 kgs)