Product detail: Brand: ROCKBROS Colour: Black Pressure: Max. 160 PSI Valve: Presta and Schrader Suitable for: MTB, BMX, road bike etc. Normal size: approx. 21.5 cm Extended size: approx. 36.5 cm Mini, portable, lightweight, built-in inner tube With barometer: After the inner tube is pulled out, there is a barometer, you can clearly see the air pressure in real time. With hose: The mini pump is very small and light, the weight is only 134 g (0.3 lbs). After the tube is stretched, the length of the air pump can reach 36.5 cm. Dust covers: There are dust covers on the head and end of the pump to prevent rainwater from entering. Attach to the frame: With the supplied pump holder, it can be installed on the side of the bicycle frame, takes up little space and does not interfere with the use of the bottle cage.