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KEEP YOUR BIKE TIRES IN TOP CONDITION: Inflate a tire in seconds with our 1 turn valve system. Activate the joystick to adjust the CO2 trigger rate for precise control of the influence. 2-in-1 valve head for Presta and Schrader valves that do not need to replace the valve head. DUAL VALVE DESIGN The inflator is compatible with Presta and Schrader valves. And the pump head can fit seamlessly with any size of CO2 threaded cartridges (12g/16g/20g & 25g). But the CO2 cartridge is not included in our set. (Attention: The insulated canister only fits the 16g CO2 threaded cartridge & non-threaded cartridge). SMALL COMPACT & LIGHTWEIGHT CO2 BIKE PUMP Compared with traditional bike pumps, our pump is lightweight and compact, it can be held and inflated by one hand. And it is equipped with a strap. It can be easily put in a backpack or attached directly to the bike. It is a good partner for your bike tour. Reliable Quality The whole CO2 air pump for bicycles is made of aluminum alloy, which is sturdy and durable. The anti-slip design of the body, which can protect you during inflation. As you know, carbon dioxide absorbs a lot of heat during gasification, which quickly drops the temperature of the gas storage. CO2 cartridge instructions (16g): Screw CO2 cartridge with valve head firmly (this is for CO2 cartridge perforation with thread) -> Cover with the canister to avoid frost bites -> Connect valve -> Turn lever to inflate. Non-threaded CO2 cartridge (16g): insert the CO2 cartridge into the canister > Screw the canister and valve head firmly > Connect the valve -> turn the lever to inflate.; Product description Bicycle CO2 Inflator 2 in 1 Valve Head with Cartridge Storage Container Bicycle Pump CO2 for Road Bike MTB Schrader & Presta Suitable for 12g 16g 20g 25g CO2 Cartridge Thread QA: Q:Is the inflator also suitable for mountain bike tire road bike? -A: Absolutely it works perfectly with mountain bike to fill a complete tire, you need 2 CO2 cartridges. Q: Is the diameter of the cartridge thread standardised or do we need to buy a special size? - Hello, thank you for this question. The CO2 inflator has a universal head, i.e. a 12g/16g/20g/25g CO2 thread cartridge can be used. But the insulated cainster only fits the 16g CO2 thread/non-threaded cartridge. Q:Which valve is compatible with? e.g. car valve? ? -A: according to description, it is compatible with Presta and Schrader valves (=car valve). With the \; Product description Bicycle CO2 Inflator 2 in 1 Valve Head with Cartridge Storage Container Bicycle Pump CO2 for Road Bike MTB Schrader & Presta Suitable for 12g 16g 20g 25g CO2 Cartridge Thread QA: Q:Is the inflator also suitable for mountain bike tire road bike? -A: Absolutely it works perfectly with mountain bike to fill a complete tire, you need 2 CO2 cartridges. Q: Is the diameter of the cartridge thread standardised or do we need to buy a special size? - Hello, thank you for this question. The CO2 inflator has a universal head, i.e. a 12g/16g/20g/25g CO2 thread cartridge can be used. But the insulated cainster only fits the 16g CO2 thread/non-threaded cartridge. Q:Which valve is compatible with? e.g. car valve? ? -A: according to description, it is compatible with Presta and Schrader valves (=car valve). With the \; Bicycle CO2 Inflator 2 in 1 Valve Head with Cartridge Storage Container Bicycle Pump CO2 for Road Bike MTB Schrader & Presta Suitable for 12g 16g 20g 25g CO2 Cartridge Thread QA: Q:Is the inflator also suitable for mountain bike tire road bike? -A: Absolutely it works perfectly with mountain bike to fill a complete tire, you need 2 CO2 cartridges. Q: Is the diameter of the cartridge thread standardised or do we need to buy a special size? - Hello, thank you for this question. The CO2 inflator has a universal head, i.e. a 12g/16g/20g/25g CO2 thread cartridge can be used. But the insulated cainster only fits the 16g CO2 thread/non-threaded cartridge. Q:Which valve is compatible with? e.g. car valve? ? -A: according to description, it is compatible with Presta and Schrader valves (=car valve). With the \