Wanhao D6 GoPro Mount. Come in 2 parts to be glued together. This allows for better printing orientation and option of selecting the base best suited to you need. There is one base that is thinner so clear the enclosure door if installed and a stronger base if you don't need to clear the door.
*Attention: Do check the clearance with the printhead. I have no clearance issue on mine but all the machine a different.