) Universal 4-Way Macro Focus Slider, Adjustable Camera Grip Description: 4-way macro focus rail slider can be adjusted in four directions: forward, backward, left and right Provides 2.75 inches of maximum movement from front to back and 1.25 inches of maximum movement from left to right The humanized designed gimbal plate is made of rubber material, wave crest structure, which can increase the friction with the camera surface, prevent slipping and reduce wear and tear on the camera The self-contained precision double scale greatly increases the accuracy and speed of rail adjustment Designed with positive locking knobs for stable focus Standard 1/4 screw which is suitable for all professional SLR cameras Specification: Material: alloy Size(LxWxH): Approx. 23x12x8cm / 9.06x4.72x3.15in The package includes: 1 piece 4-way macro rail