These bulkplates are aerospace grade precision bulkplates made from 6061-T6 Aluminum bar stock on a 4 axis CNC and then professionally anodized.
3/16" x 38mm Aluminum Bulkplate to fit fiberglass 38mm Coupler. Center hole is for #10 screw, outside holes are for #8 screw and are 1" center-to-center distance apart. Price is for each Bulkplate.
