This Fluidmaster B1T20CSP15 Click Seal 3/8 in. x 7/8 in. x 20 in. Toilet Connector is fast and proven upgrade to your toilet supply line. Quickly replace your old or leaking connector with flexibility that won't kink or crease during installation, even in tight spaces. This toilet supply line fits standard 3/8 in. Compression x 7/8 in. Ballcock connections. Replacing couldn't be easier with no tools required. Simply twist, click and seal and the click lets you know its sealed. Featuring braided stainless-steel construction for durability and flexibility with an included 5-year warranty. Lead free and meeting all code requirements. For a fast, easy and effective replacement of your toilet supply line trust Fluidmasters CLICK SEAL technology.