ITEM NAME:2Pcs 1 inch Ball Adapter With 1/4 inch Screw For Underwater Camera Arm Tray P8O4 2Pcs 1 inch Ball Adapter With 1/4 inch Screw For Underwater Camera Arm Tray P8O4 This 1 inch Ball adapter is used to mount an underwater housing, camera or other equipment that has 1/4 inch inch inch screw hole at the bottom when you need to extend with other device. The ball base adapter made of high quality CNC aluminum alloy. The o-ring in the balls of the arms eliminates the metal to metal contact. This allows a much more linear clamping force, allowing you to control the arm movement when used with small or large strobes even in varying current
