The Easton EC70 Carbon Fiber Seatpost is a staple carbon post for us. Why? Because it's strong, durable and lightweight. It uses Easton's Carbon NanoTube Technology (CNT) producing an improvement of strength of 20% over the prior version. The shaft is a natural carbon color, and the easily adjustable two-bolt head is crafted from polished aluminum. Available in 27.2, 30.9, and 31.6 diameters, all in 350mm lengths. 10mm of offset. 215g.