Reusable Valve Connection: Features a screw-thread connection to the gas cylinder, sealed via an O-ring or sealing washer. Lightweight & Portable: Made from aluminum, the model with a pressure gauge weighs approximately 58 g, ideal for carrying while cycling. Compatibility: Compatible with various valve types, such as American Schrader valves and French Presta valves. High-Pressure Resistant: High-pressure resistant construction ensures a secure seal to prevent leaks or bursting. Safety in Handling: When releasing high-pressure gas, frostbite can occur (due to rapid CO₂ expansion and cooling). Therefore, using a bottle sleeve is required. Includes Pressure Gauge: Allows you to monitor the pressure more accurately during inflation. Descriptions: Brand: ROCKBROS Product: Mini CO2 Pump Material: Aluminum Alloy Weight: Model with pressure gauge ≈ 58g Color: Black Suitable Valves: American (Schrader) Valves / French (Presta) Valves