BMX seat post, made of aluminum. The down tube is 25.4mm in diameter and 34cm long. The head is adjustable, so the user can change the angle of the seat. And the top part clamps down on a piece of tubingthat is 7/8" in diameter. 联系方式Co:Pearl Lin Co., Ltd. Add:No.708, Song Vun Rd,, Dalicity, Taichung Hsien, Taiwan 412 Tel:886-4-2407-5338 Fax:886-4-2407-9933 Email:t5074@ms26.hinet.net
联系人：Ms. pearl lin国家：Taiwan产品类别机械五金t5074@ms26.hinet.net
