The 1/2" Radiator Key (Valve Spanner) - TLSR is a high-quality tool designed for adjusting radiator valves efficiently. Made from durable materials, this spanner ensures a secure grip and easy operation, making it an essential tool for plumbers, heating engineers, and DIY enthusiasts. Suitable for use on 1/2-inch radiator valves, it provides smooth functionality for venting and maintaining heating systems.