Ritchey Classic Seatpost: 30.9, 350mm, 25mm Offset, High Polish SilverClassic seat post provides a class leading balance between strength, weight, and adjustability. The clamp design reduces stress on lightweight rails and won't bottom out, and the bolts are oriented to the axis of the rails for greatest contact area with the saddle. The Classic also features Ritchey's 'Classic' high polish silver finish. Product Details: 3D forged 2014 alloy Low profile clamp reduces stress on lightweight rails and won't bottom out