Stud Bars are Back Bone’s answer to securing an “over-cab” load. Over-built in traditional Back Bone style, these are milled from a solid aluminum bar. They are then drilled and chamfered utilizing yet another of Back Bone’s proprietary designs. Aptly named the “quadra-hole” design, it utilizes three tie-down access holes each opposite one another, and a fourth on the top. This allows for multiple tie downs to be attached simultaneously to each stud bar, and aligned for maximum tension. The Stud Bars are tig welded in place. Available for Baby Back, Full Back and V Back configurations.