Moveski All Metal Macro Focusing Focus Rail SliderClose-up Shooting Clamp Plate 115mm Adjustment with 14 inch Screw Head for DSLR Cameras Tripod Ballhead Arca RRS Lever Clamp

Features: Helping to achieve exacting camera-to-subject distance, Macro Focusing Rail is a focusing stage offering fine- tuned control across a 115mm adjustment range The Rail is driven by a knob-controlled worm gear and index scales, in millimeters, are printed on both sides of the rail for consistency. Cameras can be mounted on top of the rail via the integrated 1/4"" screw, which uses a 48mm-diameter thumbwheel to secure cameras in place. 214mm overall length (including adjustment knob). Weight 293g (10.3oz).