C.E. Smith Swivel/Bolster Brackets are top unit pivots for proper angle of flat-mounted bunk or bolsterboards. Slotted for vertical adjustment. Heavy-gauge steel with non-slip dimples for better hold. Assembled. Width: 2.5. Holes: 13/32 - 2.5 on center. Galvanized finish. Lengths: 8, 10, 12. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Tongue Jack Accessories.