KS-1 Universal 360 Degrees Rotating Tripod Ball Head w/ Quick Release Plate for SLR Cameras - Black
44mm-diameter ball; CNC precision finishing; Surface after multi-stage oxidation treatment very smooth and durable; With 3 independent anti-skid damping rotary knobs to adjust the head at any angles; With detachable quick release plate and 1/4" screw; Bottom with 1/4~3/8" converting nut.