MMG PVR70 Valve Stem Bent 45 Degree Angled - Brass Stem, Snap-in Rubber Base (Pair - 2pcs) - Tubeless Tire Rim - Motorcycle Scooter ATV PVR70 Brass Stem, Snap-In Rubber Base - 45 degree Bend (Not Parallel) with Safety Cap Bent at a 45 degrees. Angle to fit most tubeless tire rims The Valve has about 15 mm diameter were it mounts on the rim, not at the bottom. Material: Stem Brass | PVR70M Rubber Stem Base