The file '“Z” Axis Knob 3D Printer Model' is (stl) file type, size is 15.5KB.
It's a "Z" Axis Knob.... Try it out
Top of the Knob is my own design but the threaded portion is from another thingiverse file by Schtimpy here:
https://www.thingiverse.com/thing:3373265
