These bulkplates are aerospace grade precision bulkplates made from 6061-T6 Aluminum bar stock on a 4 axis CNC and then professionally anodized.
1/4" x 5.5" Aluminum Bulkplate to fit fiberglass 5.5" Coupler. Holes are 5/16" - opposite holes are on 2 1/16" centers to fit 5/16" U-bolt (McMaster-Carr PN 3043T68)t. Price is for each Bulkplate.
