The outer Z wheel kit has arrived. Here are the parts..



These are the same size wheels that are used for the X and Y axes. And X and Y wheels also are on the outside of the aluminum extrusion. This makes adjusting the slack on that axis easy and simple. But the Z currently has these tiny rollers that go inside the aluminum extrusion and once together adjustments are near impossible or a real pita at the very least. So this upgrade is a must for me because I need to be able to make frequent and simple adjustments to my machine as I chase better print quality.