O-Shape Metal Adjustable Twin Flash Bracket for Macro Photography DSLRs This O-Shape Twin Flash Bracket is a great and useful photographic gear. Specially for macro (close-up) and portrait photography Its designed 2 of quarter tracks let 2 flash units can be attached onto this bracket and the 2 flash units can be placed at side (horizontal) to top for different situation is needed. The length of the bottom bar is extendable for matching different lenses with vary lengths. This bracket is great for placing 2 flash units at both sides to getting 2-Dimensions lighting source and make the result of the object images more 3D feel. its designed slim size (unexpanded) is convenient for storage specially for carrying when outdoor photograph or outing