This universal radiator threads set is designed for venting and plugging radiators. It includes a 1/2" manual radiator air vent plug valve, a key for the radiator air vent, a 1/2" radiator blanking plug, and two sets of 1" to 1/2" left and right-hand threads with gaskets. The set has a size of 1/2", a maximum working temperature of +110C, and a maximum working pressure of 1.0MPa (10 bar).