Compatible with the Mountaineer series 3 and 2 tripods, the Gitzo GH3382QD Series 3 Center Ball Head is capable of accommodating up to 40 lbs of weight. It is equipped with two locks: one to control the ball’s movement, and the other to facilitate 360° panning. Use the ball’s tungsten disulfide coating to minimize unwanted stick-slip and ensure smooth movement of the ball. You can tighten the included Arca-type quick-release plate with the help of the included screw-knob lock. The bullseye bubble level comes in handy for maintaining straight horizons in your images. The integrated friction control dial on the large locking knob lets you make precise adjustments.