The RIDGID Standard Series ProPress XL-C Rings are designed for efficient, flameless connections of 2½" to 4" copper or stainless steel tubing. Compatible with RIDGID Standard Series pressing tools (RP 340, 330C, 330B, 320E, CT400) and ProPress XL-C (copper) and XL-S (stainless) fittings, these rings feature a patented swiveling design for enhanced access in tight spaces, ensuring reliable and secure connections.