Guild flat bottom, non-slanted pickup rings for original full size HB-1 guitar pickups from the '70s-'80s. NOTE: 1970-1973 models have rings that are slightly narrower side to side. The way to tell if they will fit is if the holes for the height adjustment screws are closer to the pickup than the edge of the ring. The 1970-1973 rings have the adjustment holes equidistant between the pickup and ring edge. Dimensions are: Exterior 3-3/4" x 1 7/8" Interior 2-13/16" x 1-9/16".Molded from originals. Available in neck and bridge. Price is per ring. This is the link to a great article that discusses Guild pickups and ring sizes. http://www.gad.net/Blog/2011/11/25/guild-full-size...