The radiator bleed switch key is designed for ease of use and efficiency. Its ergonomic design allows for a comfortable grip, making the bleeding process straightforward and easy. Ideal for both residential and commercial use, this tool is a must-have for anyone looking to maintain their heating system effectively.Features-Color:Silver-Material:Zinc alloy-Size:2.70X2.50X1.00cm/1.06X0.98X0.39in-Reliable materials: made from sturdy materials, this key is designed to be durable for longterm use-Easy to use: the bleed key is userfriendly, allowing for straightforward air release from radiators-Wide range of use: compatible with various square radiator sizes, making it a tool for different systems-Generous quantity: the 20piece pack ensures you have plenty of keys for various needs and replacements-Enhanced radiator function: efficient air bleeding with this key can improve the overall performance and heat dissipation of radiatorsPackage list: 20 x Radiator Valve Key