Giottos MH1300-657 Ball Head (Black) Weighs 1.44 lbs. Includes MH657 Arce-compatible quick release with bubble levels Extra-large hollow lightweight ball Base with 3/8-Inch socket with 1/4-Inch bushing Weight: 1.44 lbs Load capacity: 25 lbs Base with 3/8-Inch socket with 1/4-Inch bushing QR plate with 1/4-Inch threads Height: 4.4-Inch