CNC T track blocks

These were designed for my craftex t tracks on my cnc for holding projects in place or setting a repeatable corner for xy. They are designed for 1/4" by 5/16" t track. I printed mine in petg with 5 layers top and bottom and 25% infill and they seem to be working well. The bolts will be a tight fit but I have a drill bit I like to use on them to so they're a perfect fit.