Sevenoak SK-GT Heavy-Duty series camera sliders are designed to give you the ability to create high-quality videos without over-extending your budget. It features heavy-duty Aluminum construction, adjustable feet, 1/4″ and 3/8″ screw thread, precision bearings etc. It can be used standalone with the included feet whose height can be adjusted easily, or attached directly to tripod(s) with the built-in screw thread. With precision bearings built under the sliding plate, the camera motion is smoother and quieter than ever. The SK-GT Heavy-Duty series camera sliders are suitable for amateur cameras, professional cameras as well as for cameras with recording function (such as Canon 7D, Canon 5D Mark2, Canon 60D,Canon 500D~550D,Nikon 3100,D7000,Sony A55 etc.).