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Arc-Zone's diamond grinding wheels are the highest-quality available and are made with Industrial Grade Diamond Media for long trouble-free grinding.
Dimensions:Diameter: 25.5mmThickness: 1.0mmArbor Hole Size: 3.0mm
Coarse Grit - A-PTG-002 - This wheel is ideal for grinding 1/8" (3.2mm) diameter tungsten, and for when you want to remove lots of material quickly.
Medium Grit - A-PTG-002A - This wheel is the best general use wheel and comes standard in the sharpie pro kit, works best with 3/32" electrodes.
Fine Grit - A-PTG-002B - This wheel provides the smoothest finish, critical for use with .040 and 1/16" electrodes.