WOODRIVER
WoodRiver Project Kit - Salt or Pepper Mill Grinder Mechanism Turning Kit 8"
CrushGrind - the original ceramic mechanism
CrushGrind Ceramic Grinder for DIY Salt Pepper or Spice Mills with Adjustable Grinding Setting (10.2" - Pack of 1)
Ebaco
Ebaco Professional Pepper Grinder - with Germany Hardened Carbon Steel Mechanism Rotor, Refillable Pepper Mill 6OZ Glass Adjust Coarseness (1PCS-Sliver-304)
Chef Specialties
Chef Specialties Professional Series 10 Inch, Made in USA Pepper Mill Mechanism Kit