Syntace P6 7075 Alloy Seatpost Claimed Weight: [34.9, 480mm] 313 g, [34.9, 400mm] 243 g, [31.6, 400mm] 256 g, [30.9, 400mm] 262 g, [27.2, 380mm] 256 g Diameter: 27.2 mm, 30.9 mm, 31.6 mm, 34.9 mm Length: [27.2, 30.9, 31.6] 300 mm, [27.2, 30.9, 31.6] 350 mm, [27.2, 30.9, 31.6] 400 mm, [34.9] 480 mm Material: [head] 7075 aluminum, [shaft] alloy Recommended Use: road or mountain biking