Purchased this mount as I was previously using a home made mount but a change in PPE contract led to a change in fittings. Couldn't find the Blackjack mounts that had been supplied with my camera, so purchased another. The mount is pretty good, does what it needs to. The only things holding me back from 5 stars are: 1) The grub screws to secure the mount to the helmet would be great if they were longer or if you were supplied with multiple lengths. The point at which I'm mounting the camera is fairly thin, so it doesn't feel as robust as I'd like because only a small amount of the grub screw remains within its thread. 2) The diameter could do with being a fraction larger. It's a little too snug to slide my camera in and out of the mount, just makes it a bit more time consuming to put it in or out or even to swap batteries and memory cards etc. Other than those two points though, does exactly what I need it to.