The HoldRite ProGuard in-wall PEX stub-out solution provides rigid installation while maintaining the optimal outside bend radius range recommendation of 3.3 to 3.4 inches. It also locks the stub-out in the Z-axis to prevent unwanted front to back slippage, making this patent-pending design the ideal solution. Transforming the plumbing industry through innovation. HoldRite: Converting Makeshift Methods into Engineered Solutions. The last three decades have seen HoldRite evolve from a single product family business to an international corporation and acknowledged industry leader. HoldRite has established a reputation as a leading manufacturer known for innovative products and services in such categories as pipe and equipment support systems, acoustical plumbing solutions, water heater accessories, and water and firestop sleeving systems.