Rapid Fit Rough-In assemblies with testing features. The newly designed overflow elbow with knock-out test feature now works with both 1 & 2 hole overflow plates. The Revolver Overflow Elbow incorporates an integrated test feature, as well as a snap-0n overflow plate. The Dual-Test feature provides overflow/drain plugs and hardware to test and then mount overflow plates. Rough-In kits are offered in ABS and PVC, half or full (includes pipe and tee) kit options. Half Kits – includes overflow elbow, chrome strainer, gaskets & test capability (no piping or tee included). Full Kits – includes overflow elbow, drain elbow, tee, pipes, chrome strainer, gaskets & test capability.