The G9717 6" Bench Grinder with 1/2" Arbor is great for any shop. It comes with one 36-grit aluminum oxide wheel and one 60-grit aluminum oxide wheel. The grinding wheels included with the G9717 are 5/8" wide/thick and can accept wheels from 1/2" to 3/4 wide/thick. The tools rests stabilize the workpieces when grinding and should be adjusted as the grinding wheels wear down. The eye shields are adjustable to minimize sparks and debris thrown at the user.