This Power Steering Adapter Kit fits (1979-'07Mustang II) power racks with 14MM - 1.5 and 16MM - 1.5 ports. These adapters include crush washers and Teflon o-ring seals to seal the adapter to the rack. A machined or spot-faced surface approximately .120" wide is required around the opening of the ports to ensure a positive seal, Crush washers and Teflon o-rings can be removed for applications where the ports contain inverted flare cones. - Zinc plated steel with crush washers and Teflon o-rings - Made in USA