These Full Length Side Plates also provide extra bracing for the DeFender against frontal impacts, helping to prevent buckling of the weaker, stock tub sheetmetal just rearward of the armored fender. DeFender Full Length Side Plates are CNC laser cut from 3/16" 6061-T6 aluminum plate. Bolt holes are countersunk so that the supplied flat head stainless steel hardware lies flush with the plate's surface