[Suitable For All Radiators]: Universally compatible with all standard radiators that use standard valves with the dimensions 5 x 5 mm/0.19x 0.19 inch. [Easy to Use]: Once they feel cool, locate the vent valve at the top of the radiator. Insert the bleed key into the valve and turn it counterclockwise to release air. The characteristic hiss signals the air deflation. When the hissing is silent and water leaks, the ventilation is complete. Finally, tighten the valve using the bleed key. [The Package Include]: You get 1 elaborately made high-quality stainless steel radiator ventilation handle. [Tough and ]: Our radiator ventilation handle is made of stainless steel, which has good resistance, heat resistance, low temperature strength and mechanical properties. It can be used for a long time, and is very practical and cost-effective. [Enhanced Leverage]: Longer handle design provides extra leverage for effortless turning on this radiator airer., Manufacturer: Agmoctz