【FIT&ROBUST】:Seatpost used for for most old style bike,and the bike saddle with clamp.Made of 6061 aluminum alloy,light weight&strong and durable.
【SAFE LINE MARK】:There is a safe line mark on the seat post. Please insert at least above the minimum safety line.
【EASY INSTALLATION】:Just unbolt your old seat and remove your seat post then bolt on your seat to your new seat post and install it into your bike frame.
【SIZE】:Length:350mm;Diameter:25.4mm 27.2mm 28.6mm 30.4mm 30.8mm 31.6mm;Thickness of the tube:3mm.
【Note】:Please do measure the actual required diameter before purchasing. Saddle clamp is not included, please buy the saddle clamp separately if needed.