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 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 Exquisite workmanship, aluminum alloy made, processing, surface oxidation treatment, for long service life