Manfrotto 75mm Half Ball Leveler with 3/8" Screw for 75mm Bowl Tripods

The 520BALL is a 75mm half ball that levels a video head on any tripod with a 75mm bowl, carrying a 3/8 in screw on top for the head. Aluminum, 7.5 cm (2.95 in) in diameter, 0.4 kg (0.88 lb).