The 1/4 in. (3/8 in. O.D.) Shark Bite Push-to-Connect Straight coupling is the easiest way to join copper, CPVC or PEX pipe in any combination with no soldering, clamps, unions or glue. 1/4 in. size is common in appliance applications and is used to run lines to faucets, toilets, dishwashers, ice makers, and other small diameter applications. Just insert the pipe and the stainless steel teeth bite down and grip tight, while a specially formulated O-ring compresses to create a perfect seal. Disassembly is just as fast using the simple disconnect tool so fittings and valves can be easily changed and reused. They can even be rotated after assembly for easier installation in tight spaces. Get Shark Bite and get a grip on your next plumbing project.