14mm hardened MAX-Performance steel shackle resists both cutters and leverage attacks. Double deadbolt locking mechanism has extensive holding power. High security, disc-style cylinder with reinforced anti-drill, anti-pull protection system. 3 stainless steel keys -- one lighted with high intensity bulb & replaceable battery. Includes carrying pouch and disc lock reminder. Key Safe Program. Product dimensions: 1.8” x 2.1” (48mm x 54mm). Product weight: 2.00 lbs. (0.91 kgs).