The Lezyne Control Drive CO2 Inflator is a compact, CNC machined aluminum CO2 inflator with high quality brass internals. Featuring a twist control knob for easy and moderated inflation, a twin slip chuck head compatible with both types of valves, this inflator is reliable, easy to use, and will last for season after season. Features: Head compatible with Presta and Schrader valves Twist-valve on/off operation allows for easy control of inflation pressure Neoprene sleeve insulates hand from cold during discharge Compatible with threaded CO2 cartridges Sold as inflator head only CO2 cartridges sold separately Specifications: CO2 Type: Threaded Cartridge: Not Included Valve Compatibility: Presta & Schrader Gauge: - Color: Black Weight: -