Features: Available from 1/4"-20 external thread to M4 M5 M6 M8 M10 external thread. Aluminum alloy material, smooth surface, strong and beautiful, wear-resistant and corrosion-resistant, not easy to rust. CNC processing, fine trimming without burrs, increasing friction, making screwing easier. Wide range of applications, can be connected to the projector bracket adapter, photography accessories, PTZ camera tripod, etc. The thread is smooth, easy to install and disassemble. Specifications: Material: Aluminum Alloy Type: A24/A25/A26/A27/A28(Optional) A24: 1/4 Male to M4 Male A25: 1/4 Male to M5 Male A26: 1/4 Male to M6 Male A27: 1/4 Male to M8 Male A28: 1/4 Male to M10 Male Qty: 2 Pcs/set Package Includes: 2 Pieces Conversion Screws note: Due to manual measurement, please allow an error of 0-1cm. Please make sure you don'for t mind before ordering. Because of the differences between different monitors, the picture may not reflect the actual color of the item.