Neewer Video Camera Fluid Drag Head with Sliding Plate for DSLR Cameras, Camcorder, Monopod and Tripods with 3/8" Screw Mount, 8.82Lbs/4kg Load Capacity The innovative photo-movie head is developed to simply the best and most ideal solution for the HD DSLRs, which has a sliding plate which travels to balance the latest interchangeable lens cameras Faster, easier and safer to use: the side lock system allows the camera and sliding QR plate to click quickly into the head from above, instead of needing to be aligned and slid in from the back It smoothly pans 360 degree and tilts 180 degree and comes with a removable, right-sided pan arm and 3/8 1/4 inches quick shoe plate The tripod mount thread on the bottom is 3/8 inch; The special design of security locking can prevent the equipment from falling off accidentally Professional bubble level design can help keep the stable shooting to adapt to different environments