●Multiple diameters for optional 25.4mm 27.2mm 28.6mm 30.4mm 30.9mm 31.6mm ●Material: Aluminum alloy 6061 T6 ●Clamps can be adjusted to fit the angle of the saddle ●Fit Frame Seatpost Holes: 25.4mm Length: 350mm Tube Thickness: 2.5mm, High Strength ●Replacement seat post for most bicycles, mountain bikes, road bikes, and universal bikes