Put one of these on your bike and rest assured it’s not riding anywhere without you. High-security Anti-pick/pull/drill, Z-Key cylinder offers optimum deterrent against physical attack. Ultra-hardened 5.5mm steel pin. Total of 5 precision laser cut keys, including one with integrated micro white LED spotlight. Includes coiled disc reminder cable and belt clip carrying pouch. 5.5 mm (2.75"×2.25"×2", 2 lbs.). Lifetime warranty.