Supply Line, Hose Inside Dia. 3/8 in, Hose Length 12 in, Hose Tube Material PVC, Hose Cover Material Nylon, Max. Working Pressure @ 70 F 200 psi, Temp. Range 40 Degrees to 150 Degrees F, Standards AB1953, CSA, cUPC, Hose Fitting A Material Brass, Hose Fitting B Material Plastic, Hose Fitting A Type FIP, Hose Fitting B Type Ballcock Nut, Hose Fitting A Size 1/2 in, Hose Fitting B Size 7/8 in, Hose Configuration Coupled Assembly, For Use With Toilet, Application Toilet Flexible toilet connectors are nonrigid lengths of hose that connect a toilet's tank to the building's water supply to convey water to the toilet for flushing. They do not need to be cut to size, and they can flex to bend around obstacles during installation.Toilet connectors (also called toilet water supply lines) are used to.