... Flashlight Battery Pack SF-XSupport to be used with:Canon flash light --- 580 EXII, 580 EX, 550 EX, ... MR-14EX, MT-24EXNikon flash light --- SB-11, SB-20, SB-22, SB-24 ... SB-27, SB-28, SB-28DX, SB-80DX, SB800Sony flash light --- HVL-F56AMSpecification:External Dimension (WxHxD): 69x158x25mmNet Weight: ... provided, but the above types are usable. Flash Battery Pack SF-17