1Parameter Description: 1/4in to 3/8in male thread, easy to manually assemble and disassemble, suitable for camera conversion screw, tripod, and other accessories. 2Aluminum Material: Made of high quality aluminum alloy material with high strength and rust resistance, having good performance for long service life. 3Fine Workmanship: The surface of the screw adapter has received anodic oxidation treatment for high smoothness, good workmanship ensures satisfying using experience. 4Easy to Use: Equipped with clear thread, able to provide a uniform force for convenient mounting, making it strong for heavy duty work and preventing deformation. 5Simple Installation: There are 3.5mm/0.1in diameter round holes on the screws, which can be easily disassembled by using hexagonal wrench or other equipment.