The Kryptonite M18-WL New York Lock is built real tough with an 18mm hardened max performance steel shackle that resists bolt cutters and leverage attacks. It features an oversized hardened steel sleeve over the crossbar for double security, with a double deadbolt locking for increased holding power, a high security disc style cyliner that's more resistant to drills and picks and a center keyway defending against leverage attacks. To finish the New York Lock has a protective vinyl coating, sliding dustcover to protect the cylinder and three stainless steel keys, one of which features a high intensity LED bulb and replaceable battery. The Kryptonite M18-WL New York Lock weighs in at 2.76kg (6.1lbs).