Large load capacity but lightweight in design, portable to carry, perfect for outdoor travelling photographers Exquisite workmanship, aluminum alloy made, processing, surface oxidation treatment, for long service life 3 Fine tuning knobs enable to up to + / 5 degrees in horizontal, wear-resistant rubber pad and the locking designed dials the camera perfectly leveled for stable photography Standard 3 / 8 " top external and 3 / 8 " bottom screw thread, which is for different types of tripods Professional photography accessories, widely used for precise leveling in portrait video