Sony FE 4.5-5.6 / 100-400 GM OSS Lens Tripod Rotation Knob

Lost the screw and knob from my 100-400. Modeled a replacement that is easy to print and skookum. 

Use a m2 7mm socket head cap screw to mount this knob on your lens. Make sure to use some red Loctite so the screw does not back out. 

This knob should work on the 70-200, 200-600, 300, 400, and 600, but I have not tested it outside of the 70-200.