This is a direct Sony HDR-AZ1 Action Cam to GoPro mount. It allows mounting with no adapters. This is used without the waterproof case. Attachment requires one M4 X 10 mm socket head cap screw (not included). Latest version slims down rear nub and makes M4 hole a bit deeper.Requires one M4 X 10 mm socket head cap screw to attach to the camera. If you use the print test file, it will print it in two pieces that need to be welded together, some minimal support may be needed but I don't think its necessary.