The Ishii replacement 7/8" titanium scoring wheel is direct replacement for the Big Clinker cutters:
Also replacement wheel for the Ishii Red Turbo Jet Tile Cutters:
Q: will this scoring wheel fit the AH-1240S2 cutter
Yes, this cutting wheel will fit the Red Turbo Jet Cutters as well. (AH 1240S2, AH 1040S2, and AH 8702S2A)
Customer Support answered on June 26, 2017
Q: Will this cutting wheel fit JW-700stw cutter
Yes the 22X 7/8" Titanium Coated wheel will fit all the ishii cutters starting with JW except very old models like 10 years or more.
Customer Support answered on October 9, 2018