I use with Gladiator Zoom 10-30x50. Fit good, steady on the tripod, but so far only indoors out the window, as long as I don't touch anything, or bump with my glasses, but then all tripods are probably like that, not the mounts fault if you bump it.
Solid and sturdy. Fits most binoculars equipped with adaptor screws. To be used with tripod or window mounts.