Endcaps for the ToM. These replace the stock ones with a similar design having a cutout for the included shim. This allows the y-axis rods to be quickly removed without having to unscrew 8 fasteners to get them out. Packaged as a plate for the ToM with 2 endcaps and 2 shims.
Just pull the shim and retract the rods through the hole in the middle! Easy peasy!