?MATERIAL?: Made of 6061 aluminum alloy, Lightweight strong and durable.Polished anodized finish, never rust.
?SIZE?: Length:350mm; Diameter:25.4mm/27.2mm/28.6mm/31.6mm; Thickness of the tube: 3mm.
?USE&FIT?: Seatpost used for most MTB mountain road bicycle, fixed gear bike, downhill bike, track bike etc. it is easy to instal.
?SAFE LINE MARK?: There is a safety line mark on the seatpost. Please insert at least above the minimum safety line when installing the new seatpost.
?PAY ATTENTION?: Please choose the size according to the inside diameter of the frame tube. Saddle clamp is not included, please buy the saddle clamp separately if needed.