Interfit STR144 Strobie Twin Metal Umbrella Bracket Description. Strobies high quality all metal professional umbrella brackets Designed to be versatile for professional photographers these all metal flashgun & umbrella holders allow 1 or 2 flashguns to be used or a combination of a flashgun & radio receiver in the other shoe mount. Using the same shoe mount available on the Strobies XS Brackets with large thumbscrews enables you to adjust your flashguns even with gloves on. With spring loaded handles the brackets will stay in place without dropping so you can always be confident that your lighting will stay in the position you placed it in. Can be used with most sizes & types of umbrellas with 7 or 8mm shafts. Please note Flashguns Umbrellas & Lighting Stands are not included we recommend COR751 stands for indoor & COR752 COR753 for outdoor work.