The Force Logic™ Ring Jaw 1 provides a solution that takes the advantage of press vs. sweat to the max.   Pressing 2 1/2" -4" pipes using a unique to Milwaukee® 2 - hinge design provides quality connections in close quarters, and the heavy duty steel  provide outstanding durability.  Ring jaw 1 enable the use of the M18™ Force Logic Press Tools with any of the standard copper Force Logic™ press rings and provides a quality press connection on Viega® XL-C, Elkhart