High-pressure design: This bicycle air pump features an impressive maximum pressure capacity of 110 PSI. This allows you to achieve quick and efficient results for your tires, balls, and more Easy switching, gas cylinder inflation: Easy to use, inflation can be stopped at any time during the inflation process 360 ° rotating connector, the air pipe can rotate 360 °, making it easy to fit the tire nozzle and avoid nozzle damage CNC all aluminum alloy, using aluminum alloy inner and outer dual cylinders, durable, lightweight, good airtightness, wear-resistant, impact resistant, and not easy to oxidize CNC all aluminum alloy inflator, dual-purpose for Presta and Schrader valves: presta valve for direct inflation, schrader valve for manual inflation requires connecting to a conversion nozzle Specification: Material: Aluminum alloy Valve: Presta and Schrader valves Air pressure: 110PSI Height: Unstretched ≈ 133mm; Stretch ≈ 195mm Weight: approx. 66g Note: Gas cylinder NOT included