The RIDGID 16978 1 in. Compact Jaw for ProPress Systems (Copper and Stainless Steel) is designed to mechanically press ProPress fittings onto 1" tubing. The jaw is compatible with all current and previous RIDGID compact press tools (RP 240, RP 241, RP 200, RP 210, RP 100). It is 40% lighter and 33% smaller than Standard Series jaws, enabling it to easily fit into tight spaces. The jaw has been designed in conjunction with the ProPress system fittings, ensuring total system compatibility.