Sioux Chief Knock-Out 4 in. ABS Test Cap Knockout

4 inch Knock-Out Test Cap Solvent cements to Sch. 40 ABS and PVC DWV pipe. Deeper design provides stronger leak-free connections. Knock-out center can be removed with tab preventing possible blockages. Tab feature keeps hands free of solvent cement. Will withstand 17 PSI or 40' head pressure. Made of white ABS Solvent welds to sch. 40 ABS and PVC DWV pipe Deeper design provides stronger leak free connections than 'wafer' caps Large glue area "Tab" feature keeps hands free of solvent cement Withstands 10 PSI or 30 ft of head pressure   California residents see   Prop 65 Warning(s)