Features: This adapter can be used to connection flashing memory through standard hot shoes or PC synchronous lineHave a PC synchronization socket, so you can connect additional studio lights or flashlights through the PC synchronization cable.Hot shoe adapter will be a good supplement to your studio. Easy to use, very suitable for any of your photography needs.This hot shoe adapter is very suitable for installing Flashing memory without synchronization connector for connecting PC synchronization cable. It will allow these cameras to triggering external Flashing by using a sync line.TF321 hot shoe adapter is suitable for all standard 518-2006 hot shoe flashlights, including 580EX 580EX II 550EX 430EX 430EX IISpecifications: Component:ABSSize:Approx.3.75x3cm/1.47x1.18inchPackage Includes: 1Pc Hot Shoe Mount Adapternote: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order.2.Due to the differences between different monitors, the picture may not reflect the actual of the item.