Box ThreeÌÎÌ_ÌÎ_ÌÎÌ__ÌÎÌ_ÌÎ_ÌÎå«Ì´å Quick Release Seat Clamps are cold forged and CNC machined from 6061-T6 aluminum alloy Box ThreeÌÎÌ_ÌÎ_ÌÎÌ__ÌÎÌ_ÌÎ_ÌÎå«Ì´å Quick Release Seat Clamps are cold forged and CNC machined from 6061-T6 aluminum alloy The head of the lever and the face of the clamp are given a proprietary low-friction surface treatment that ensures smooth lever action for the life of the clamp without the need for a bushing