"FAST FLOW AIR LIQUID VALVE FOR GRADER AND TRACTOR TUBES; WHEN CORE HOUSING IS REMOVED, LARGE OPENING IN VALVE BASE ALLOWS FAST FILLING OF TIRES WITH ANTI-FREEZE SOLUTION; PREPARED FOR HOT OR COLD APPLICATION; BASE DIA 4-1/4""; STEM LENGTH 1-7/8""; 5 PER BOX"