Allows rider to control the saddle angle and position on the fly 3 positions: 10 degrees nose down for climbing, 12 degrees nose up for descending, and level Convertible down to 2 positions Independent foreaft saddle adjustment Net weight gain after replacing the stock rail clamps is about 85 grams CNC milled in Whistler, Canada from 7075 T6 and 6061 T6 aluminum Required, but not included: injectionmolded shims necessary for fitment by seatpost model