Put one of these on your bike and rest assured it’s not riding anywhere without you. Anti-pick/pull/drill, dual steel ball locking M-cylinder lock mechanism with integrated dust cover. Armored steel case with titanium plating. Ultra-hardened steel pin. Both locks include a white LED spotlight on main key and 4 spares. Includes disc reminder and belt clip carrying pouch. 5.5 mm (2"×2.75"×1", 2 lbs.). Lifetime warranty.