About this 3D model

These x-ends use SA bushings (same OD for 8 or 10mm rods) These x-ends are compatible with 3 hole delrin nuts 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.