Don't know your fitting size? Take the guess work out of the water supply connector selection precess with Fluidmaster's Universal or Fits-All faucet water supply connectors. The universal or fits-all faucet connector with CLICK SEAL technology fits alll standard bathroom and kitchen faucets and fits all popular shutoff valves ranging from 1/2 In., 7/16 In., 3/8 In. compression fittings to 1/2 In. iron pipe fitting. Made of tough polymer core covered with braided stainless steel wire, these connectors exceed every code requirement. They also have a large inside diameter for higher flow capacity. Fits all bathroom and kitchen faucets. Fit all popular shut off valves. Exceptional flexibility for fast, easy installation. 5 year warranty. Lead free. Won't kink or crease, even in the tightest of spaces. Heavy-duty brass hex nuts are easy to grip and nickel plated for durability. Exceeds all code requirements for flexible water connectors.