Description: Premium Material: Made from stainless steel and zinc alloy, ensuring wear resistance, durability, and long term usePortability: The Radiator Bleed Key and Radiator Key Wrench come with a hole for easy hanging, which makes it very convenient to carry and storeEasy to Use: The Square Socket Radiator Plumbing Bleed Key and Radiator Spanner are easy to use, you can open the radiator quickly and conveniently; once the radiator feels cool, insert the vent key into the valve and turn it; after the venting is completed, finally use the vent key to tighten the valveWidely Use: The Radiator Bleed Key and Radiator Key Wrench are wonderful for radiator venting and can also be used as a key for different types of valvesPackage Includes: 5Pcs Radiator Bleed Keys, 1 Radiator Key Wrench Size Chart: Wrench 7.01cm/2.76inch Package Includes: 5Pcs Radiator Bleed Keys, 1Pc Radiator Key Wrench Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.