Feature●Single knob for ball & pan lock●Base Ø 1.0", Ht. 2.3"●Load capacity 7 lbs.●Top plate with 1/4" thread●Base with 3/8" socket with 1/4" bushingDescription Giottos MH1304-110C Professional Mini Ball Head features a single knob for ball & pan lock in small, strong, and light weight ball head