Rear brake pedal adjuster, lock nut, spindle stop and lock nut. Norton featherbed frames 1953+, shown in the parts manuals but numbers listed are not correct. The original adjuster is round and difficult to tighten. This one has a hex head for range. Original part number: 19976 - Rear brake spindle stop - adjuster 1/4 inch lock nut 5/16 inch lock nut