The plug is used at the end of the radiator to seal and prevent water from escaping.Specification Color: Silver, WhiteMaterial: Nickel Plated Brass, NylonOverall Size: 28x18mm/1.1x0.71inch (OD*H)Thread Diameter: 3/4" Male (26.441mm/1.04inch)Max. Working Temperatures: +120°CMax. Working Pressure: 1,0MPa (10 bar)Packing List: 2 x Radiator Air Vent Valve PlugAdvantageMade of nickel-plated brass material, it has the feature of stability, high hardness, corrosion resistance, and wear resistance. The surface is polished, which is very bright, and beautiful. Thread with a rubber o-ring for better sealing performance.InstructionEasy to use, screw the cap into radiator and fix it by spannerNotePlease order according to the size you need. .