More informationDESCRIPTION:Compatible with Hugo 52 rims with straight valve hole and designed to fit valve holes from 7.5 to 8.5 mm. Sold per pair. IDENTIFYING YOUR HUGO TIRE AND SELECTING THE CORRECT VALVE STEM: Staggered Hugo tires have a larger diameter valve hole on the inside of the tire and a narrower hole on the outside of the tire. Quick Tip: Do not remove the tire if not necessary. If your Hugo tire sticker says: MAXIMUM TIRE PRESSURE: 2.8 tires: 26 psi, 3.0 tires: 24 psiERD 615, 622x49.9, 29 inches x 52.3 mmYour tire has a step valve and is not compatible with this valve.For the Hugo "stepped" valve hole, use part AS0105: Stem Pair valve, schrader, 32 mm and 14 mm base.