This Easy-To-Install Metal Adapter Is Used To Connect Two Photography Equipment With Male Mounts Of Different Sizes (1/4" And 3/8"). It Is Suitable For Various Equipment And Accessories Such As Flash Units, Studio Lights, Tripods, Flash Brackets, Flash Lamp Holder Adaptermaterial: Metalapprox. Dimension: 2.8Inch/7Cmpackage Contents:3 X 1/4" To 3/8" Spigot Stud Adapter Screw