Universal M30 x 1.5 connection – Compatible with most standard thermostatic radiator valves, providing an easy replacement solution for worn or damaged TRV heads. Thermostatic temperature control – Precisely regulates water flow to maintain comfortable room temperatures, enhancing energy efficiency across your heating system Sleek all-black finish – Modern matte design complements black or anthracite radiators, creating a stylish and cohesive look in contemporary interiors Quick and tool-free installation – Simple twist-fit head allows fast fitting or removal, ideal for quick maintenance and reliable performance in any central-heating system, Weight: 0.2866009406 pounds, Manufacturer: Primaflow