The RIDGID 37973 1 1/4 in. Press Ring for Megapress Fittings is designed to mechanically press MegaPress and MegaPressG fittings onto 1 1/4" commercially available black iron pipe, schedules 5 through 40. The ring is compatible with RIDGID Standard Series Press Tools, including the RP 340, RP 330, 320-E, and CT 400. It has been jointly designed and tested with Viega, ensuring total system compatibility.