SmallRig Ball Head Clamp with 3/8'-16 ARRI Accessory and 1/4'-20 Screw Mounts

This is a great little attachment product, but even with Arri locating pins, you can't just screw it and it holds perfectly.. you need to get an Allen key and really tigthen it. I'm yet to find the perfect adjustable monitor/accessory mount hat works and the screws hold without crazy pressure.

Finally, a monitor arm that doesn't constantly twist loose! This thing stays in place because of the guide pins, unlike other arms. The tightening mechanism is fantastic. Keeps your monitor where it should be!

Love it. It's one of the pricier options, but the ability to really tighten the ends with an allen key is awesome. I use this to mount a monitor, and with another ball bearing adapter I used before there was always a good amount of movement when you used the camera handheld - you can hand tighten only so much. And once you tighten the lever the ball bearings lock in rock solid - there is zero movement or wiggle - and despite being somewhat short you have a lot of flexibility in how you'd like to spin/move this to fit your needs in regards to different mounting and viewing angles. I was considering either this one or the comparable option by Kondor blue - which I can't speak of bc. I haven't tried it - but I am in no way regretting my decision to go with the smallrig. The end I mount my monitor on has a little rubber pad, whereas the kondor blue doesn't - I think it's one of the reasons the monitor doesn't move.