Fernco 1-1/2" or 1-1/4" Plastic Tubular Drain Pipe Connector at Menards®
Pipe to Pipe rubber connector/adapter
Polypipe Boss Pipe Rubber Connector Pushfit Waste Adapter Reducer White 40mm x 25mm - Amazon.com
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2 X Watering Garden Sink Hose Pipe Tap Reducer Rubber Connector Adapter | eBay