Ball and Socket Swivel Tripod Ballhead with Flash Hotshoe Support and Umbrella Support for Nikon SB-800 SB-900 SB-600 Canon 430EX 580EX 580EX II 550EX It's compatible with any tripod that has a standard 3/8'' screw. It supports studio lighting umbrella with 7mm shaft. It help you easily position your flash and create your own studio lighting with speedlites Contents included: IS-C1 swivel flash ballhead bracket x 1