The Pivoting Press Ring Kit from Propress includes 6 pieces of rings/clamps in sizes 1/2 inch, 3/4 inch, and 1 1-1/4 inch, specifically designed for use with Milwaukee M12 and M18 tools. These press rings are ideal for copper applications and come with two different jaw sizes (M12 JAW and M18 JAW) to fit various pipe sizes. The pivoting feature allows for easy maneuverability during crimping and pressing tasks, providing a convenient solution for professionals in the plumbing industry.