Rear brake pedal adjuster, lock nut, spinde 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. These have a hex head that is wide enough to allow for contact with the curve in the brake arm over a wider adjustment range. Original part number: 19976 - Rear brake spindle stop - adjuster 1/4 inch lock nut 5/16 inch lock nut
