- The Original Tumbler’s Tumbler (Rock or Brass Case Tumbler) replacement knobs.
- Replace those annoying washers and wing nuts with these knobs.
- Perfect replacement for those 1/4”-20 wing nuts and washers.
- Printed with the Prusa i3 MK3 3d Printer (best on the market)
***Printed with the Prusa i3 MK3 3d Printer (#1 award winning FDM printer)***