Shop RIDGID Compact Jaws for PureFlow (PEX) 3/8" to 1 1/2" at McCally Tool and Supply. Compact Series Jaws For PureFlow® press PEX pipe from 3/8" to 1 1/2". For Use With RIDGID Compact Press Tools. Designed in conjunction with the Viega PureFlow system and PEX Press fittings, ensuring total system compatibility.