This Spinner uses 1/2" Hex Nuts instead of the bearings for the outside weights. Uses the standard 608 bearing for the center. I also have created a small 1/2" 'filler rod' to screw into the nut for aesthetics. Tight fits to keep everything in place so you may need a vice or pliers to pop the nuts and bearing into place. Updates: 3/14 - The threads of the filler rods were off. So I have redesigned them. Removed them for now, will be uploading the new ones soon.