EXTEC Diamond Wafering Blades are available in high or low concentration in 3" (76 mm), 4" (102 mm), 5" (127 mm), 6" (152 mm), 7" (178 mm) and 8" (203 mm) diameters. Our full range of blades covers all types of materials including basic metals, ceramics, glass, soft/gummy materials, alloys, composites and much more.