ProAm USA Aluminum Stand Mount to Camera Crane Adapter All-Aluminum CNC machined Stand Mount Adapter is the most secure and stable way to mount your camera crane to a pro stand. Machined from a solid piece of aluminum, the stand mount will not break like other plastic molded adapters. It snugly fits pro stand shafts sized 1 - 3/8" in diameter. Custom nylon bushing allows very smooth 360 panning. Scratch resistant black powder coating.