[Material]This bicycle seat post clamp is made of high-quality aluminum alloy material,which is rust-proof and corrosion-proof,light in weight,high in strength,very strong and durable. [Humanized design]Using a quick-release seatpost clip design,the design is simple,stylish and practical,the installation and disassembly are very simple and fast,and the daily use is more convenient. [Strong operability]This seatpost clamp is very operable,you can adjust the inclination of the bicycle seat at will,and you can adjust the seat to the most comfortable position according to your own feeling,bringing you a good riding experience. Product Quantity: 1 Piece Product color: black Product size: inner diameter 22.2mm