ProPress® 57240 2999.52 Ring, For Use With Viega Pressgun 6, Standard Tools and Copper Tubes, Press-In Connection, Phosphated SteelProPress Ring, Series: 2999. 52, For Use With: Viega Pressgun 6, Standard Tools and Copper Tubes, Press In Connection, Phosphated Steel, 4 in Viega jaws and rings are uniquely engineered specifically for Viega fittings to make a reliable press every time The same power tool can be used across Viega systems to make presses on different products Make a press at any angle with Viega patented swivel feature on rings and actuator, an advantage when working