New Colonial West "White" Abrasive Wheel 80 Grit (Type 1A1) size: 8" x 3/4" x 1-1/4"  wheel specification 20A80JV.  White Wheels are made from Premium Aluminum Oxide semi-friable grains. White wheels are used primarily for grinding hard tool steels. They are cool cutting on heat sensitive materials. Light stock removal of .001 or less per pass.