These are designed to fit the Incra router plates. The original ones supplied by Incra are steel and attached magnetically. These 3D-printed alternatives use 10mmx1mm magnets glued into recesses in the cover. Play close attention to magnet orientation when glueing them in.

Cleansweep (dust extraction) and standard versions are included.

Recommended to be printed in ABS, 40% infill and 5 perimeter walls for added strength.