... to Herrenknecht, Mitsubishi, Wirth, Komatsu, Robbins machines. 137mm to 432mm Roller Cutter/Shield Cutter Face Single Disc Cutters, Face Twin Disc ... Cutters, Center Disc Cutters, Scrapers, Disc Cutter Rings, etc. Size: from 137mm to 432mm (5.4inch ... for Herrenknecht, Mitsubishi, Wirth,Komatsu, Robbins tunnel boring machines.We also can produce according to customers drawings or samples ...