This is a universal central heating dosing funnel radiator tool with a 1-litre capacity. It is a premium quality tool designed for use with central heating systems and radiators to ensure effortless and accurate dosing of chemicals. The funnel simplifies the process of introducing inhibitors, leak sealer, boiler silencer, sludge removers, anti-freeze, and more into your radiator. It features a swivel joint that easily fits into any 1/2" BSP tapping. Simply attach the device to your radiator, pour in the desired chemical, and let gravity do the rest. Specifications: Height: 190mm. Opening diameter: 140mm.