QQ-Tech Creative Universal Alarm Padlock for Bicycle Motorcycle Door Gate Bike Shed Bolt Chain Lock 110db Siren Heavy Duty Security Alarm Lock (17mm Shackle, Black) by QQ-Tech QQ-Tech Creative Universal Alarm Padlock for Bicycle Motorcycle Door Gate Bike Shed Bolt Chain Lock 110db Siren Heavy Duty Security Alarm Lock (17mm Shackle, Black) 17mm Shackle