?<strong>Features:</strong> <br>Exact follow focus design helps to adjust focus. <br>Damping design£¬ good touch feeling. ? <br>Convenient for assembling and disassembling. <br>Follow focus is made of high strength aluminum alloy. <br>Gear drive can be mounted on both sides (works for both right-handed and left-handed). <br>With a focus ring£¬ it fits lens size from 52mm to 86mm. <br>International standard£¬ mounts on 15mm rod support (rail center to center: 60mm). <br>? <br><strong>Specifications:</strong> <br>Compatibility: All (D)SLR cameras and camcorders <br>Material: Aluminum alloy + PC + ABS <br>Fit lens size: 52-86mm / 2.0-3.4in <br>Fit rail distance: 60mm / 23.6in <br>Fit rail diameter: 15mm / 0.6in <br>Weight: 345g / 12.2oz <br>Package size: 21 * 13.5 * 9.8cm / 8.3 * 5.3 * 3.9in <br>Package weight: 449g / 15.8oz <br>? <br><strong>Package list:</strong> <br>1 * Follow Focus <br>1 * Focus Ring