Comm used on ferrous alloys, high-tensile materials, and wood. Wheel Diameter (Inch) 12 Wheel Width (Inch) 2-1/2 Hole Size (Inch) 5 Wheel Type Number Type 1 Abrasive Material Aluminum Oxide Grit 80 Grade Fine Recess Type No Recess Wheel In Stock. Added to Cart. 2-1/2" Wide x 12" Diam, Type 1 Feed Wheel. C #: 54985254.