Why waste Money on Inferior Wheels Compare to others company wheels, Our 4 inch Diamond Wheels Are Specificly suited for grinding hard materials ,They are particularly well suited for glass beveling, cold glass working and lapidary. A Top Quality Replacement for Your Diamond Pacific Pixie Machine. We also have 8" X 2" wheels for your Titan machine.2"Width wheel with 2" steel ring and 1.5" width plastic core and 6" X 1" X 1.5" for your Genie or Cab King or any 6" Cab Machine.