Male 1/4"-20 screw on the top, female 3/8"-16 thread hole and Arca-Type on the bottom.
Compatibility
Allows device with 1/4"-20 female thread attach to device with 3/8"-16 male threaded screw
Allows device with 1/4"-20 female thread attach to device with Arca-Type clamp plate
The converter can be used with a wide range of photographic devices such as camera, tripod, monopod, ball head, light stand, video light etc.