UNS Filter Tubing dark tinted smoke color helps disguise the build-up of organic matter in the tubing allowing for a cleaner and more aesthetic appearance. Connects the canister filter to your glass and stainless steel lily pipes as well as Delta quick release valves. Can be used with other aquatic systems such as pumps and siphon vacuum hoses. 5/8" (16/22MM) fits UNS Delta 120 Canister Filter, as well as 16/22 Delta Quick Release Double Tap Valve. Made from premium vinyl ensuring durability and longevity. UNS Filter Tubing is made from premium materials ensuring durability and longevity. Featuring a tinted smoke color, UNS filter tubing connects the canister filter to the glassware or stainless steel pipes of choice. Its tinted feature helps disguise the build-up of organic matter in the tubing, allowing for a cleaner appearance!