Ultra-lightweight pump hidden in the seatpost so as not to unnecessarily interfere with the bike's graceful curves, yet easily accessible. A rubber ring secures the pump and a position indicator determines the position in the seatpost. This pump is only compatible with circular diameter seatposts. Ninja P is the winner of the prestigious Red Dot Award. Body material: cnc aluminum Pressure: 160 psi / 11 bar Handle material: cnc Aluminum / Plastic Valve: road Mounting: round seatpost ø27.2, ø30.9 or ø31.6 mm Dimensions: 20.3 x 2.1 x 2.1 cm Weight: 62 g Art.No.: TNJ-P