Never used! In box. Pro bike tool CO2 for tires

SUPER FAST & RELIABLE TIRE INFLATION - Inflate a tire in seconds with our 1-Turn Valve System. Control lever operation regulates speed of CO2 release for precisely controlled inflation. Twin valve head threads onto either Presta & Schrader 'threaded' valves with no valve head switching needed. - SAFE CARTRIDGE STORAGE & SECURE CONNECTION WITH NO LEAKS - Integrated canister for safely storing a CO2 cartridge, canister body also insulates from cold during inflation. Secure & safe screw-on valve