From Manufacturer
The GIGH4383QD Series 4 Center Ball Head from Gitzo is an Arca-type compatible ball head that is compatible with Systematic 3, 4, and 5 tripods, has a load capacity of 66 lb, an independent panning lock for 360° rotation, and a height of 4.9". The head weighs 2 lb and has a tungsten disulfide coating to help keep the ball movement smooth while it minimizes sticking and slipping. A screw lock lock tightens down on the included quick release plate, and a bubble level helps maintain straight horizons in your images. To allow for precise adjustments, a friction control dial is integrated into the large locking knob.
UPC: 719821446934