Universal kit 4 reduced radiator plugs 1 “with 3/8 or 1/2 purguers. Made of cast iron with nickel plated finish. Manufactured with 1 “left or right threads. Internal thread of the drain plug and blind plug to 3/8 or 1/2 right. Supplied with 3/8 or 1/2 blind plug and purguer. Provided with 4 silicone gaskets and a key for actuating the purger. Especially indicated for installations of aluminum heating radiators.