Godox Pb820 Pb960 Flash Battery Pack Cx Power Cable Witstro Flash Accessory Extension Power Cable for Canon 550ex 580ex Ii Suitable for flash battery pack PB960 and PB820 Easily connect the flash with the power pack External power pack connection cable for Canon speedlite camera flash Made by high quality cable, abrasion resistance, high insulation Cable length: 50cm (not extended), it can extend up to 1.5m