Professional Heavy Duty Video Camcorder Tripod Fluid Drag Head Kits by Fancierstudio WF717A A infinitely fluid damping system insures smooth camera camcorder movements through the range Built-in bubble horizontal leveling Ideal for digital camcorder weighing up to 6kgs Fluid drag system ensures smooth, consistent fluid drag control Comes with carrying case the fluid can work with any tripod or slider standard mount 3/8"