Mercer Abrasives 616100-25 Black Lightning High Speed Thin Wheels Type 1 Cut-Off Wheels 5-Inch by 0.040-Inch by 7/8-Inch, 25-Pack Black lightning high speed thin wheels type 1 cut-off wheels Size: 5-Inch by 0.040-Inch by 7/8-Inch 25-Pack Metal grit Available in all different sizes and grits