Large load capacity but lightweight in design, portable to carry, perfect for outdoor travelling photographers Standard 3 / 8 " top external and 3 / 8 " bottom screw thread, which is for different types of tripods Exquisite workmanship, aluminum alloy made, processing, surface oxidation treatment, for long service life Professional photography accessories, widely used for precise leveling in portrait video 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