Universal kit 4 reduced radiator plugs 1″ with 3/8 or 1/2 purguers. Made of cast iron with “white” enamel finish. Made with 1″ left and right threads. Internal thread of the purguer 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 purguer. Especially indicated for installations of aluminum heating radiators.