Barska Ball Joint Tripod Head 90 Degree Tilt Connects to 3/8 - 16 Thread Tripod Screw Black Outer Size 2.5 x. This Compact Ball Head Mount features one main knob that unlocks the ball joint so that you can quickly position your camera properly retighten the knob and return to shooting. There is also a full 360 degree panning knob that allows the camera to be rotated on a full 360 degree axis without having to loosen the ball joint. The Ball Joint Tripod Head by Barska features a 90 degree notch which facilitates shooting in portrait orientation and one bull's eye bubble leveler to make sure the tripod is perfectly level. The included quick-release plate has a retractable video pin and attaches to your camera via its standard 1/4"-20 screw. With your camera attached to the quick-release plate it easily snaps and locks into place on the ball head and a tightining safety knob prevents it from being accidentally released. Tripod and camera not included. Specifications for Barska Ball Joint Tripod Head 90 Degree Tilt: Manufacturer: Barska Color: Black Finish: Black Matte Features of Barska Ball Joint Tripod Head 90 Degree Tilt Universal Quick-Release Mounting Plate Standard 1/4"-20 Mounting Screw Connects to 3/8 - 16 Thread Tripod Screw Full 360 Degree Panning 90 Degree Tilt Bull's Eye Bubble Level Easy-to-Use Adjustment Knobs Portable and Sturdy Package Contents: Barska Ball Joint Tripod Head 90 Degree Tilt Barska AF12544: Ball Joint Tripod Head 90 Degree Tilt Connects to 3/8 - 16 Thread Tripod Screw Black Outer Size 2.5