Balance Bike Electric Scooter Extension Air Nozzle Universal Accessories Pump Bicycle Inflatable Tube No. 9 Features: 100% Brand New and High Quality Made of high quality materials, durable and easy to use Suitable for M365/Pro Scooter, Balance Bike, Unicycles, electric vehicles, bicycles, recreational vehicles, etc. are designed with zero air gap, no air leakage, fine workmanship, and durability. Material: Steel Optional Size: 25mm, 39mm Product Category electric scooter For people aldult weight 0.01 (kg) Origin China color 25mm extension inflation valve, 39mm extension inflation valve