The HoldRite TESTRITE service wrench is designed to be the only tool needed for HoldRite TESTRITE tees. The service wrench allows you to remove and re-use the TESTRITE test wedge, which allows temporary blocking of the DWV stack for testing while providing connections for convenient system fill and drain. Adjustable from 2-in to 6-in making it ideal for recessed and/or tight in-wall locations.