Description This is a bike seat post clamp, made of premium and safe aluminum alloy material,this clip is firm and stable. Aluminum alloy seat rod clamp is easy to install and use. No more tools, you can install yourself, easy to use, bring you a better experience. Features -Color:Black -Material:Aluminum Alloy -Size:4.50X3.20X1.50cm/1.77X1.26X0.59in - Fine processing seat post clamp with screw fine-tuning design, easy to install and adjust. - 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 the force 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 high grade aluminum alloy, which is durable. High grade, excellent performance, performance. Fine processing seat post clamp with screw fine-tuning design, easy to install and adjust. 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 the force 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 high grade aluminum alloy, which is durable. High grade, excellent performance, performance.