Standard Series ProPress Jaw Sets are designed to mechanically press ProPress fittings onto 1/2, 3/4, 1, 11/4, 11/2 and 2 in tubing. An individual jaw set is required for each size tubing. Standard Series Jaw sets are designed to be used with RIDGID® Standard Series Press Tools such as the CT-400, 320-E, RP 330 and RP 340. Standard Series Jaw Sets cannot be used with RIDGID® Compact Series press tools such as the 100-B, RP 200 and RP 210. Jaw sets and press tools must be used perpendicular to the fitting/tube being pressed.