This is a set of two gold-finish metal humbucker rings with matching screws (4 per corner), perfect for use on your special build. These are meant for full-size humbucker pickups and not mini-size. The outside dimensions of these rings is 3.5" x 1.75" (88.9mm x 44.5mm) and they are 5/32" (3.97mm) in height. The inside dimensions are 2.75" x 1.5" (69.9mm x 38.1mm).