Features Made of high quality metal material no plastic or rubber parts very durable The bowl adapter allows you to convert 75mm bowl mount tripods to a standard 3 8 inch or 1 4 inch screw flat Enables the user to create level horizons much more easily If you have bowl type tripod and have flat mount type fluid head the adapter will be helpful Ideal for location shooting or for studio use Specification Material MetalDiameter 75mmScrew Size 1 4 inch 3 8 inch Detail Pictures