Valve Extenders: This set of Air Tire Stem Extension has 3 angles, available in 45 degrees, 90 degrees and 135 degrees, which successfully solve the matter that you cant use foot pump to check the tyre pressure or deflate the tyre due to the lack of space between the tire valve and the tyre spokes. Allow Inflation and Deflation: The Tire Stem Extension has a built-in valve core, which can be inflated and deflated. And all are equipped with rubber sealing rings to ensure the air tightness of the inflation. This Valve Extenders will be applicable to Car Motorcycle Bike Truck RV Scooter with standard tire valves. Anti-rust Material: Made of sturdy and durable copper metal, Air Tire Stem Extension has a beautiful appearance, precise design, not easy to rust or corrode, and has a long service life. Easy to Use: The Tire Valve Extenders is quick and easy to operate. Simply remove the existing valve dust cap and screw in the tire valve, and then tighten the valve stem. Value Pack: You will get 3pcs 45 degrees valves + 2pcs 90degrees valves + 2pcs 135 degrees valves. Tire Valve Stem Extender with different angles can meet your different needs, so you don't need to buy extra.