SIRUI BCH-20 Professional Video HeadsFor professional video applications, the Sirui BCH 20 Video Head is based off a 75mm ball mount for use on compatible tripod legs or other accessories such as sliders and jibs. Friction adjustment can be applied in 3 steps, with the 0 setting providing nearly frictionless movement. A 7 step adjustable counterbalance can compensate for cameras weighing up to 22 pounds. The BCH 20 is controlled with dual rosette mounted pan handles. Both pan handles