Easton ea50 offset seatpost eastons entry level seatpost is packed with impressive features we start with a durable ea50 aluminum alloy shaft and add an easy to adjust two bolt clamp dont be fooled by the sleek lines and subtle aestheticsthis post offers as much function as form the forged aluminum clamps offer rock solid stability and 10 millimeters of offset will accommodate any bike fit making the ea50 seatpost a smart upgrade features weight 310g clamp diameter 31 8mm material ea