American Valve RCC150X100 Flexible Pvc Coupling Pipe x Clay, 6 x 4" For connecting drain, waste, and vent (dwv) pipe Connects clay pipe to cast iron or plastic (sch 40) Made of flexible PVC and resistant to household chemicals Perfect for cut-ins and repairs with stainless steel bands for easy installation Certified by IAPMO (UPC) and CSA to US and Canadian Plumbing code standards