* ONGUARD Locks are the toughest in the world * Dual lock-down deadbolt locking mechanism offers second-to-none holding power * M-cylinder mechanism is a major theft deterrent.Anti-drill and pick-proof guts * Ballistic plastic holds up to the most aggressive trashing and thrashing guaranteed * All locks include 4 laser-cut keys and 1 light key for night time use * Key Replacement Service - register your key number or know your key number and the keys will be replaced * Ultra-hardened reinforced steel hex-link provides maximum cut resistance * 14mm 3 ’ 7 ”, weighs 14 lbs. * 12mm 3 ’ 7 ”, weighs 9.5 lbs. * 12mm 5 ’ 4 ”, weighs 13.7 lbs. * Five Star plus security level rating make these locks the ultimate theft resistant locks for high crime areas