FreeKnurling Nut Bolt
Thingiverse
7 model
Free
FreeEnder 3 V2 Knurling Style Tension Knob Cover
Thingiverse
FreeEnder knob knurling(3, 5, Pro, CR-10)
Thingiverse
FreeEnder 3 V2 Knurling Style Tension Knob Cover (More grip and screw hole)
Thingiverse
FreeEnder 3 v2 Knurling LCD Controller Knob
Thingiverse
FreeYARQM: Ball with Knurling
Printables
FreePrint Quality Test Screw
Printables