FERNcO BR-64 Fernco O Ring 6 x 44 inch cast iron or 4 inch plastic house pipe to clay, plastic, concrete or ac sewer pipeFeatures of FERNcO BR-64 Fernco O Ring 6 x 4 4 inch cast iron or 4 inch plastic House pipe to clay, plastic, concrete or ac sewer pipe Easily Fits and this is easy to install Made in United statesSpecification of FERNcO BR-64 F..