20pc. Set. 1960-1981 GM Brake Line Set Plated Steel Fitting Pack - (10) 3/8-24 STN01, (2) 7/16-24 STN06, (2) 1/2-20 STN04, (2) 9/16-18 STN14, (4) 7/16-24 STN12. All the sizes to plumb any GM car or with 3/16 / 1/4" tubing. These are all stainless steel fittings used for 3/16 1/4 brake line - all the correct sizes for the cylinder, brake valve, rubber hoses, wheel cylinders, calipers and any other brake component. These are exact to the factory originals and have all the details - they are the correct size and shape with the correct color. This is a exact Inline Tube reproduction of the original.