1. Material:（ Aluminum alloy） All metal material, surface plating, anti-wear, anti-oxidation, durable. | 2. Description: Multi-purpose design, one end uses 1/4 screw, the other end uses 3/8 screw, the total length is 70mm. | 3. Camera stud: It can be used for the conversion screw, which can be screwed to the lamp holder or tripod by hand, can be connected to the flash trigger of the camera, and the bottom of the flash hot shoe of the conversion base. Used for conversion of various lamp holders. | 4. Packing description: There is a 1/4 to 3/8 external thread stud adapter in the package. | 5， 100% quality assurance: All photos shown are taken in kind, without PS/P images. We only focus on quality. I believe you will like it. If you have any questions, please feel free to contact us via email. Thank you.