These are the brackets that bolt to the frame to hold the disc hose in place the caliper. The drum brackets are different. The disc brake brackets are double the thickness to accept the disc brake hose. When converting your a-body to disc brakes these are a must. Features the correct part numbers on the back. These are concourse level parts. Don't settle for rusty junk parts when you can buy new. This is exact Inline tube reproduction of the original featuring the correct thickness metal in silver zinc finish. This is a concourse quality exact reproduction.