Nylon plumbing fittings are an economical alternative to more costly bronze or Marelon fittings.For joining three hoses with the same inside diameter together, fittings like these Nylon Hose Tees cost less than similar fittings made of Marelon or bronze, but are for above-the-waterline use only.Sizes from 1/2", 5/8", 3/4", 1", 1 1/4", 1 1/2"Above-the-waterline use only