1. Material: copper + plastic 2. With a different bike pump adapter kit, you can adjust the unfit valve to fit the air pump or gas station compressor 3. Used in car compressors, French bicycle valves 4. Made of copper, corrosion-resistant and durable 5. Valve needle for ball pump (about 40mm in length), with thread, suitable for football, volleyball, basketball, air mattress, etc. 6. With Khomui's valve adapter kit, you can use unsuitable bicycle valves, car valves or air pump valves 7. A variety of specifications, you can choose according to your needs