THE 2010 LEADER SPA2 IS MADE OUT OF ALUMINUM AND HAS A MEASURING SYSTEM ON THE BACK FOR EASE OF KEEPING YOUR SEATPOST HEIGHT AT THE PERFECT HEIGHT. ONLY SEATPOST AVAILABLE IN POLISHED ALUMINUM! For track riding as well street riding. This seatpost is made out of aluminum & has a beautiful aero design. standard clamping system perfect for all types of saddles out there.