Faucet Foot Extension, or Faucet Installation Aid. 2 Pieces. 1 /2" FIP X 1/2" MIP X 2 3/4 Inch - By Plumb USA 35997X2 1/2" FIP X 1/2" MIP ( iron pipe treaded ). Overall length: 2 3/4 inch. For extending faucet foot in installation. Needed if countertop board is thinker than faucet foot. This product is complied with California AB1953 Lead Plumbing Law. Made of no-lead brass ( less than 0.25% lead content ). Wrench pad for thread protection and easy installation.