Holdrite’s Testrite is a safe, dry and fast testing system designed for stack testing of PVC, ABS and no-hub cast-iron drains, waste and vent plumbing systems. The system features a reusable test wedge that keeps projects and installers safe and dry, drastically reduces testing time and works on multiple DWV piping systems. The test tee remains in the system to serve as a cleanout. Installation videos can be found on the company website. Holdrite. www.holdrite.com