Bed leveling bolt and knob for aluminum extrusions of Anycubic Kossel

Even better bed leveling mount: https://www.thingiverse.com/thing:3158524
Except it will require few M3 bolts and M3 hex nuts.

This thing supposed to replace Anycubic bed mounts with no need for any metal parts but bolt and nut already used in old mounts.

Sources is there:
https://cad.onshape.com/documents/00754f31c201007badc391f4/w/6c9d9fca393489e56ca8e34e/e/67f31d5c629758d1cc4a894e
(some times onshape won't let you to download the cad files, just ask here in comments if this happens,