Features: External power pack connection cable to speedlite. Made by high quality material, abrasion resistance, high insulation. Suitable for flash battery pack Godox PB960 and PB820. Cable can extend up to 1.5m. Fits for Canon speedlite 600EX, 550EX, 580EX II, 430EZ, 540EZ, 550EXand other flashmodel with same type of input power port.