These 2-Inch Tubbie Clamps offer internal hidden wiring, 360-degree rotation and quick disconnect. They are universally designed to fit towers or roll bars with widths of 1.5 - 2 inches.BZKMTCL2B. MTCL2B. Bazooka BAZOOKA MT-CL2-B 2" Marine Tubbie Swivel Clamp (BL).