1For Camera Cage: The three ballhead arm can be installed on the camera cage to expand other photographic equipment. 21/4 inch Screws: Articulating arm includes three ballhead with 1/4 inch screws on each respectively to adjust the direction and angle. 3Arm Handle: There is a 3/8 inch screw hole on the handle and a 3/8 turn 1/4 inch screw, which can also be used to expand the equipment. 4Alloy Material: Using high quality alloy, the camera articulating arm with three ballhead is strong and durable, and can be used for a long time. 5360 Degree Adjustment: 360 degree rotation allows you to shoot in different angles and adjust a best angle for shooting. Item Type: Camera Three Ballhead Arm Material: Alloy + Rubber Product Color: As Pictures Shown Product Weight: Approx. 142g / 5.0oz Interface: 1/4 inch screw, 1/4 inch screw hole, 3/8 inch screw Applicable Models: Universal Type 1 xCameraThreeBallheadArm