This kit is made from #6 Stainless Steel braided teflon hose and brite finished aerospace aluminum fittings and is made to work with any 4150 and older non oring 4500 series or Dominator 650 or 750 dual feed Holley carburetor. . Kit comes with blue fittings and 7/8-20 inlet fittings. Great way to insure a quality flow to your carburetor and add a custom performance look to your engine
