ITEM NAME:2 Pack Motorcycles Helmet Metal T Bar Lock Extender for Quick Release Buckle Description: Made of CNC aluminium alloy, durable and corrosion proof. Designed for helmets with quick release buckle type fastener. Convenient and practical,perfect device to hang the helmet to the Lock. You can use a similar style lock with this device. Simply slip the bar through the helmet buckle and insert into a padlock. Its then easy to lock the helmet to any part of the bike. Specification: Material: CNC Aluminium Alloy Size(L x W): 89 x 30X20 mm / 3.5 x 1.18X0.79 inch Hole Diameter: 13 mm / 0.51 inch Color:Black Package Includes: 2 Pieces Motorcycle Helmet Lock Buckles SKU: DMO0009771367021624.Made of CNC aluminium alloy, durable and corrosion proof. Material: CNC Aluminium Alloy. You can use a similar style lock with this device.