Review on 6-Piece Valve Extenders Tire Stem Extension Angle Wheel Adapter Set for Car Motorcycle Bike Truck - Silvery, with 3 Variations by Dre Bhatt

I bought these for my bike as the rear stem is difficult to get around the exhaust pipe and panniers. I've worn them on a few rides and only put 200-250 miles on them in about 3 weeks. Air loss is zero, and the ease of checking and inflating the tires justifies their minimal cost.