About this item : 
- Double head 1/4" male screw: Since both ends are 1/4" male screw, it could be used on most accessories with the 1/4"-20 thread.
- Multi-functional, can be used with tripods, monopods, telescopes, ball heads, lens collars, lens plates etc.
- Made of high quality stainless steel, it is light-weight and durable.
- Recommended for those who frequently reconfigure equipment. It is the optimum equipment for photographers/movie makers.