Size: The thumb screw's outer thread is 5/8 inch and the inner thread is 1/4 inch. This tripod adapter is a practical small tool that helps you connect your tripod laser level. High-quality material: Tripod adapter made of high-quality aluminum alloy with good polishing effect. Good corrosion resistance, not easy to rust, strong and durable, not easily damaged. Excellent design: This threaded screw adapter is of excellent quality and is easy to assemble and use. It is small and lightweight, easy to carry. Lightweight and convenient: The screw thread adapter is economical and practical, easy to assemble and use. It is small and lightweight, easy to carry and meets your needs anytime, anywhere. Multifunction: The tripod screw adapter set connects to a variety of photographic devices, such as: tripods, tripod heads, ball heads, laser levels, Bosch adapters, lightweight tripods, DSLR/SLR cameras, camcorders and much more. Note: All data is measured manually, please allow 1-3 cm error due to differences in light and screen, there may be some color differences, please refer to the actual item you receive.