Fully CNC machined from 606-T6 alloy, WeThePeople's solid and durable drops bar caps fit securely onto the end of your bars and clamp in place with a 2mm grub screw. Weighing a mere 21g, there isnt a lighter way to stop your bars getting scratched up. Features: Material: 6061-T6 Alloy Clamping screw Super light design Weight: 21g (pair)