About this 3D model
x-ends compatible with the 3-hole delrin lead-screw nuts and and LM10UUs. These x-ends don't hold x-rods, they hold a single 20x20 extrusion. both ends have an integrated bolt holder meant to interface with a z-endstop held in the lower part from thingiverse.com/thing:28425 By the way these are intended for 605zz idler bearings, you'll have to enlarge the hole either before or after printing if you intend to use 608zzs.