عجلة يدوية، المحور Z، المطحنة الدقيقة

The 60mm diameter is just right for precise Z-axis adjustments on my micro mill. It fit the 6mm shaft with the 2mm key perfectly, no slop at all.

The keyway was cut perfectly, so it slid right onto my mill's shaft without any filing. Gives a much more positive feel for manual Z moves than the stock plastic wheel ever did.

The 60 mm diameter feels just right for precise Z-axis tweaks on my micro mill, and the 6 mm shaft with the 2 mm key slid on without any wobble. I've used it for a few hours now, and the grip is solid enough that I can make fine adjustments without slipping.