These Anodized Black Aluminum Tire Valve Stems from Big Bike Parts® are are low profile at only 1 3/16” in length, making them perfect for fitting any tight space that needs a compact stance. The metal base will not pull through the wheel rim, which needs a minimum of 8mm hole for clearance. An inner and outer rubber grommet washer has a leak proof seal. An external nut makes for easy tightening of the valve stem for any required maintenance. Sold as a pair.