Hign-concerned Chemical:None Origin:Mainland China Fitment: Please verify that this part fits your motorcycle before you purchase Universal fit for most motorcycle models with 22mm(7/8")-26mm(1") tubes Apply to round tubes with 2-1/4" long section of straight tube Aftermarket chrome universal D-ring helmet lock Designed to lock your helmet on motorcycle when you need to leave for a while Hold the helmet securely in place, prevent anyone walk off with your helmet Quick to lock/unlock,also can be used as padlock holder Hang your helmet in the air, reduce the risk of impact damage if your helmet slip off the seat/handlebar Color: chrome Material: heavy duty steel Size: approx 57mm(2-1/4")*33mm(1-1/4")*25mm(1") Lock Size:22mm*10mm Mount it on 7/8"-1" tubing such as saddlebag guard,engine guard,frame tubes,etc Instructions: not included Package Included: 1x chrome universal helmet lock 2x blank keys Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.