Giottos MH1301-300C Ball Head (Black) Weighs 1.38 lbs. Includes a camera plate and calibrated tension control knob Load capacity 20 lbs. Reversible top plate with 3/8-Inch and 1/4-Inch camera mount studs Weight: 1.38 lbs Load capacity: 20 lbs Base with 3/8-Inch socket with 1/4-Inch bushing Reversible top plate with 3/8-Inch and 1/4-Inch camera mount studs Height: 3.8-Inch