Features: Available from 1/4"-20 external thread to M4, M5, M6, M8, M10 external thread. Aluminum alloy material, smooth surface, strong and durable, wear-resistant and corrosion-resistant, not easy to rust. CNC processed, finely trimmed without burrs, increased friction for easier screwing. Wide range of applications, compatible with projector bracket adapters, photography accessories, PTZ camera tripods, and more. Smooth threads allow for easy installation and removal. 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 Quantity: 2 Pieces per set Package Includes: 2 x Conversion Screws Note: Due to manual measurement, please allow a size error of 0–1 cm. Please confirm you are comfortable with this before ordering. Due to differences between monitor displays, the image may not reflect the actual color of the item.