The MID49 Universal Arca Clamp is a universal Arca-type clamp compatible with most tripod and gimbal heads, attaching via 1/4"-20 and 3/8"-16 mounting threads. Front-to-back and side-to-side screw channels allow the clamp to be bolted down with four included 1/4"-20 screws. The front-to-back channel accommodates spacing up to 30mm, while the side-to-side channel accommodates spacing up to 60mm.