This is a bike seat post clamp. This bike seatpost clip is made of aluminum alloy and steel material, lightweight and durable to use. This bike seatpost clip will not add much weight to your folding bike and not hinder the normal function of your bike. Features -Color:Assorted Color -Material:Steel, aluminum alloy -Size:12.50X1.50X1.50cm/4.91X0.59X0.59in -Note: M6 screw - The quick release design of this bike seatpost clamp allows for easy installation and removal, making it a convenient accessory for any cyclist. - Make the seat post clamped while locking the seat post without damaging the seat post itself - Let the frame and the seat post fit more closely, and is more direct - This aluminum alloy seat tube clamp is compatible for aluminum frame folding bikes, etc. - Seatpost clamp with rack mount is made of aluminum alloy, which is durable. Fine and excellent performance, performance. Package list: 2 x Bike Seatpost Clips