Here is the skinny on it. I called outdoorsman and got this information. The swaro and the universal both are idntical in thread size and pitch, and the stud is the same. The difference is in the base of the stud where the lock set screw is. The Swaro is just a little bit bigger in diameter to fully engage the diameter of the Swarovski hinge. For most binos, the Swarovski stud will work fine. IF the binos you have are very narrow in between the tubes, you might not be able to make it fit without grinding the diameter down, which means buy the one that fits. If I think of it tonight, I will get the actual dimentions of the diameter of the stud base and post it. From what I am reading, it will fit on (Pentax, Kahles, Steiner, Vortex, Minox, Nikon, Zeiss, Leupold, etc.) as long as they have the 1/4"x20 female thread in hinge. Hope this helps.