The Kryptonite Keeper 12 STD W/4″ Flex Cabler provides ultimate protection with a 2mm hardened steel shackle and hardened double deadbolt. The disc style cylinder with center keyway and side-mount snap-in bracket make it easy to use and transport. Includes 4′ flex cable for added security. Comes with 2 stainless steel keys and Key Safe Program for peace of mind. Measures 4″ x 8″ and weighs 2.4lbs, with a security rating of 5/10.