Features: This adapter can be used to connection flashing memory through standard hot shoes or PC synchronous line Have 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 II Specifications: Component:ABS Size:Approx.3.75x3cm/1.47x1.18inch Package Includes: 1Pc Hot Shoe Mount Adapter note: 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. Note: 1.Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 796 hours Hope you have a pleasant shopping experience!