I have a Bushnell Binoculars 20 x 50; this adapter works fine. Only screw the adapter to the binoculars and use them in a tripod.

This adapter is not something high tech. It just attaches the binocular to the tripod stand and it goes in the front in the middle so easy to work with. It fits and works for me or you can say that it does its job (as compared to some reviwers those who have complained for certain things). I am using on bushnell binoculars so have no issue of compatability.

One thing that I noticed is that as this adapter holds the heavy binocular from the center so the two sides tend to swing on either side while viewing (like a see saw) and the adapter screw get loose from the binocular and as my kids were using they dropped the binocular but luckily it did not break. Otherwise without a tripod it is difficult to view clearly using heavy binoculars because of slight shake/movement.

Works perfect with my Bushnell Powerview 16x50 Wide Angle Binoculars. I agree with Rima below - VERY awkward to attach and remove. Worth the $13.09 I paid for it on Amazon. The adapter works perfect, with one easy to live with flaw. Recommended.

Warning! When I first tried to use the adaptor it would not fit into the binoculars. After some research about screw sizes, calling Bushnell, etc., I finally went to a hardware store and found that the adaptor and the binoculars actually were compatible threadwise. It turns out the adaptor threads were too high (poorly milled) and the receiving threads in the binocular were not cut deep enough (poorly cut - both probably due to worn out fabrication equipment). By buying a screw (1/4" 20 threads) and applying some grease, I was able to clear the receiving threads and then work the adapter into the binocular. Now everything works fine.

It supports my bushnell natureview roof prisim binocluars very well. However the design of the binocular leaves very little space to screw or unscrew the adapter, so attaching and removing it, is bit of a hassle