BETO-mp-036 Bike Bicycle Double Cylinder 300PSI Pump With Gauge Clip Patented 2-stage design Through a patented dual-piston structure hedging Best choice in Hi-pressure for shock and big volume for tire Air volume and pressure 300PSI two-stage switching Button can fine-tune the tyre pressure value accordance with the demand The bicycle pump is a must have for those cyclist Economical portable and mini size easy to use for your carrying Large volume / high pressure Switch mode Release for adjusting pressure Durable swivel hose fits Schrader/Presta calve reversible 1 inch industrial grade pressure gauge This bicycle pump is appropriate for road bicycle, mountain bicycle, normal bicycles and so on Package Include: 1 x Bicycle 300PSI Pump