1、[Multi Knob] Ball head with 1 panning knob and 2 lock knobs, they can set your camera at different angles. With scale for more accurate control of the lock for quick positioning shots. With bubble level for more stable shooting. 2、[360 Degree] Panoramic ball head with U shaped slot design, you can easily switch from horizontal rotation to vertical shooting. 0° to 360° in 5° increments for tracking progressive panning, 360° horizontal scale for easy panoramic photography. 3、[Lightweight And Durable] 360 degree rotating ball head with all metal structure and hollow quick release plate clamp, 0.1mm processing tolerance, anodized, ultra high strength aircraft aluminum alloy, rugged and durable. 4、[Wide Compatibility] This ball head can be used with tripods, monopods, camera sliders for mounting cameras, DV, cell phones, telescopes. With a quick release plate compatible with for Acra RR, etc, easy to install and use. 5、[Stable Design] Tripod head with low center of gravity design, featuring 1/4in screw quick shoe plate screw and 3/8in thread tripod mounting screw. Anodizing and CNC machining make it very stable and the safety slot always guards your camera.