Oatey 4 In. ABS Knock-Out Test Cap Plug is a versatile plumbing solution that ensures secure and leak- connections for your ABS and PVC DWV pipes. Crafted for convenience, this test cap plug is designed for solvent welding to Schedule 40 ABS and PVC DWV pipes. Its deeper design enhances the strength of connections, ing that your plumbing system remains leak- over time. A standout feature of this cap is its knock-out center, which can be easily removed using a tab, eliminating the risk of potential blockages in your pipes. This thoughtful design also keeps your hands of solvent cement during installation, making the process cleaner and more efficient. With the ability to withstand 17 P.S.I. or 40 feet of head pressure, you can trust this cap plug to perform reliably in demanding plumbing applications. Crafted from durable white ABS, it ensures longevity and durability. Model Number: 39103