FSA Energy SeatpostThe FSA Energy SB20 is the perfect way to upgrade your cockpit without dropping a whole paycheck. The Energy seatpost brings the same reliability and versatility at a friendly value, that FSA Energy components have come to stand for.3D forged and CNC machined AL6066 w/ alloy headDirectionally butted tube (thicker wall fore and aft)Cr-Mo steel hardwareClamp Style: Std RailsL350mm x 31.6mm20mm SetbackBlack anodized finishClaimed WEIGHT275grams (27.2mm)