Symmetric-arm socket wrench

I use this as a collet wrench on my mill. The symmetric arms reduce the chance I will pull the spindle out of alignment when tightening the chuck.

I included 1/2", 5/8", and 3/4" stl s, and an openscad file if you want to customize. I use the 5/8" on the DW660 router with my Shapeoko 2.