The Bath Waste Test Plug Kit for 1-hole Faceplate and 3/8" Stem Tub Drain from Braxton Harris Co Inc is an essential tool for plumbing professionals. This kit includes a test plug designed to fit standard 1-hole faceplates, allowing for effective testing of tub drains. The 3/8" stem ensures compatibility with various drain systems. Made from high-quality materials, this test plug is durable and easy to use, making it a reliable choice for ensuring proper drainage and preventing leaks during plumbing inspections.