This is a disc lock made by the manufacturer VEISON. I used it on my bicycle, but I once forgot to remove it and bent the rotor, which caused some scratches. ※See attached photo 2. I don't want you to make the same mistake I did, so I'm including a wire as a bonus. See attached photo 3. Please use it by hooking it on the brake or clutch lever so that both you and others can see it. I look forward to your purchase.