That is a RAM Mount. I highly recommend their products. I don’t use them for my sim rig (my Thrustmaster Boeing TCA yoke has a tablet holder but-in) but use them elsewhere in various applications throughout my shop and vehicles.
They have a number of options, but shown in the photo you shared is the EZ-Roll’r, which I think is only available for iPad. They have other mounts that are universal for various tablets,etc.
You’d pair the cradle with a base and an arm. They have suction cups, or mounts that are affixed with screws or clamps.