Tire extended valves make it easy to use and expand double tires. The 90 -degree bending design makes the pump easy to repair. Just remove the existing valve dust cover, then quickly tighten the 90 -degree valve, and then tighten the valve stem. Good sealing ability, with metal dust lid, longer service life. It is suitable for bicycles, motorcycles, grass cutters, pedals and vehicles with standard tire valves. 4 x 90 degrees bending tire valve extended adapter