This adapter can fit on the hot shoe of most cameras. It has a 3/8’’ to 1/4’’ threaded stud and is used as a Monitor Bracket or anything else that has a 1/4’’-20 receiver. Two large knurled locking nuts are equipped for easy tension adjustment. It comes with a 1/4’’-20 double female barrel adapter as the standard accessory and a 1/4’’-20 receiver is also available.