Printable idler, for 2020 v-rail gantry end

Printable idler that fits on the end of a 2020 v-rail.
Fits on 2040 v-rail too, if the belt goes through the middle section.
It has "legs" that fit into the t-nut slots, and can be fastened with a M5x10mm screw to the end of the extrution.
Printed with the "legs" standing on the bed, with line-support only touching the bed.

Additional hardware:
2 pc. - 3mm shims (see attached STL, for each side of the bearing)
1 pc. - 625zz bearing
1 pc. - M5x25mm screw (or M5x35mm)
1 pc. - M5x10mm sc