Designed for ease of use, this radiator valve key is suitable for manually bleeding air from your heating system. The metal construction ensures durability, while the square socket fits snugly into radiator valves. This tool is indispensable for maintaining your heating system, preventing air buildup, and ensuring even heat distribution in your home. Features -Color:White -Material:ABS -Size:2.10X1.80X0.90cm/0.83X0.71X0.35in -Ease of use: bleed valve key and wrench provide control over radiator bleeding and draining -Complete bleeding: the square socket key design allows for full opening of the bleed valve, ensuring thorough air release -Lightweight: designed to be compact and easy to carry, making it convenient for use -Multipurpose: suitable for various bleed valves, not , offering great versatility -Quick setup: insert the key into the valve port for a simple and quick installation process Package list: 4 x Radiator Valve Keys