SK20 - Linear shaft support

Part created based on the metric table available also in the link below:

https://pt.aliexpress.com/item/SK20-2-pcs-lot-SK20-SH20A-20mm-linear-shaft-support-20mm-Linear-Rail-Shaft-Support-XYZ/32226550774.html?spm=a2g03.10010108.1000016.1.79556312AqGOoX&isOrigTitle=true

Note: Adapted only for application in 3D printing, an M4 bolt with built-in standard nut.