EMSea Heating Radiator Bleed Screw, Rotating Threaded Control for Valve Plug Reducing Pressure Venting Type 4

[Usage]: Suitable for DIY replacement bleed screw, protects the radiator from excessive pressure. [Feature]: Type-4 is compatible with most Myson radiators. [In Particular]: See the Type-12 bleed screw is similar to the Type-4, but the thread diameter is different. [Material]: Made of brass, high temperature and high pressure resistance. [Note]: Please confirm the size before purchase, as picture show., Weight: 0.01543235834 pounds, Manufacturer: EMSea