Keeney double ended extension tube allows you to get two extensions from one part. simply cut to your desired lengths and utilize your two parts to extend the waste connections from your sink to your drain connection. easily install with slip joint connection. all necessary nuts and washers are included and provide a strong connection so you can avoid leaks. the black polypropylene material is durable and made to last. keeney is a leading manufacturer and distributor of tubular drainage products. founded in 1923, the keeney product line includes under-sink drainage, quarter-turn valves, bath drains, toilet repair parts and more.