BONTRAGER XXX Full Carbon Seatpost/Clamping Piece Seatpost/UD Gloss Finish/27.2/30.9/31.6*400mm/ 20mm Sith Setback Material: Full UD Carbon fiber;Color: gray UD Finish Sith Setback: 20 mm bending resistance: 50IN-LBS Weight: 27.2mm: 175g; 30.9mm: 179g Manufacturer Warranty: 2 Years;