PREMIUM DURABILITY - Made from a solid brass block for superior strength and fully tight connections. With high-quality chrome surface for excellent corrosion and scratch protection. Sturdy construction withstands frequent temperature fluctuations and ensures a permanently airtight and leak-free connection and reliable performance for years Energy efficiency: precise threads and a flat sealing surface ensure an absolutely airtight connection between the valve and the thermostat. This eliminates heat loss and energy waste due to thread incompatibility. The result is improved system response, accurate grade by degree temperature control, and reliable comfort for your home or business, all while reducing energy costs Tool-free installation: no tools or professional installers required! Installation is extremely simple: 1. Manually screw the adapter onto the old valve thread M30x1.0. 2. Connect the new smart thermostat head to the M30x1.5 thread of the adapter. That makes this DIY upgrade really hassle-free Smart Home Ready: This adapter allows for hassle-free installation of smart thermostats with standard M30x1.5 threads on M30x1.0 valves. Get remote control, programming and energy saving without the cost of replacing entire valve systems. Before purchasing, check if your thermostat has a M30x1.5 thread (thread distance 1.5 mm, diameter 30 mm) THREAD COMPATIBILITY & PRECISION MEASUREMENT - This is a special adapter to convert M30x1.0 thin threads into standard M30x1.5 threads. Before purchasing, please check whether the thread of your old valve is M30x1.0 (for diameter 30 mm, the thread spacing should be exactly 1 mm). For older Oventrop radiator valves built up to 1998. Adapter converts M30x1.0 fine thread to standard M30x1.5 thread, Manufacturer: HUAREW