A25 Female 1/4"-20 and 3/8"-16 Cube Connector convert Male Threads to Female

Awesome, and solid product. Wish it had two different sizes(Top/Btm) for different heads.

Picked up a couple of these for macro photography, they work great, the quality is excellent.

The thread size is the same on top and bottom. Would be better that 3/8 on one side and 1/4 on the other that way you could put it on a larger tripod and use magic arm for ex doing macro.