Features: Material: Aluminum. This 4-way Macro focusing rail slider is compatible with Canon Sony Pentax Nikon Olympus Samsung and other Digtal Camera with 1/4" Screw Hole. The rail has a geared drive system which greatly enhances accuracy and speed of adjustment of the rail. Speed of adjustment of the rail greatly with two precise double scales, and allows precise distance modification. Package included: 1 x 4-Way Macro Focusing Rail Slider
