Mount & swap out gels on your flash quickly & easily with this Mag Gel Holder for the Mag Mod modifier system. The silicone rubber slot holds up to 3 Mag Mod gels & snaps on to the Mag Mod system via two neodymium rare-earth magnets. Also it is stackable with additional holders & other Mag Mod accessories. strong Compatible Flashes when connected to the Mag Grip not includedstrong Canon 380EX 420EX 430EX 430EX II 540EZ 550EX 580EX 580EX II 600EX-RT Nikon SB-24 SB-25 SB-26 SB-28DX SB-50DX SB-80DX SB-600 SB-700 SB-800 SB-900 SB-910 Sony HVL-F60M HVL-F58AM HVL-F56AM Olympus FL-50R FL-600R Yongnuo YN560 YN560-II YN560-III YN568EX-II YN565EX Neewer TT560 NW680TT680 Bolt VX-710 VX-760 VS-510 VS-560 Bower SFD680C SFD728 SFD885 SFD926 SFD970 Pentax AF540FGZ AF540FGZ II AF360FGZ Sigma EF-610 Metz 44 AF-1 52 AF-1 52 AF-2 58 AF-1 58 AF-2 Vivitar DF-286 DF-293 DF-383 DF-483 DF-583 385HV Phottix Mitros Mitros Other similarly sized flash units