The RIDGID 31228 1 1/4 in. Compact Jaw for ProPress Systems (Copper and Stainless Steel) is designed to mechanically press ProPress fittings onto 1 1/4" 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.