This is an universal adapter spigot stud for the studio use. Precision made 1/ 4 inch to 1/ 4 inch male to male screw adapter, 1/ 4 inch to 3/ 8 inch male to male screw adapter, easy to use Can putting two photo equipment devices together The length is 20 mm, and the width is 16 mm Made of metal, color is silvery Contact us for delivery in Muscat, Oman and in Dubai, UAE.