Ring Lock alone prevents roll or ride theft- Ring Lock and plug-in chain system prevents roll, ride and lift away theft- Choose 5.5mm or 9mm plug-in chain with nylon sleeve to prevent scratches - Includes flexible mounts, keys, plus Key Safe Program for replacement keys- Non-key retaining (key can be removed from lock while unlocked)- Kryptonite and AXA ring locks/plug-in options are cross-compatible- Lifetime warrantySold each, case qty 10