Ritchey Comp Zero Seatpost A Lightweight and Simple Seatpost Your seatpost doesn't have to be overly complicated, but it does need to be lightweight and highly durable. The Ritchey Comp Zero Seatpost is a light aluminum post with a zero offset and excellent saddle adjustability. It is compatible with standard rails. Features Easily adjust the angle of your saddle with the two screws on the post Zero offset and is compatible with standard rails Lightweight aluminum design that is built to last SPECIFICATIONSDiameter27. 2, 30. 9, 31. 6mm Length400mm Offset Zero Material Aluminum Intended Use Mountain, Road, Gravel Weight N/A | Ritchey | Comp Zero Seatpost 31. 6Mm, 400Mm | Aluminum