This item features: -Q-grade bond for fast cutting. -R bond provides fast cuts on welds steel and cast iron. -Cuts faster smoother and provides longer life. -Zirconia grain provides high performance grinding and very long life. -S bond offers excellent stock removal and excellent G-ratio. -Designed for stainless steel food grade and nuclear plant applications. -Zirconia provides faster cutting longer life. -Silicon carbide grain easily cuts masonry concrete and stone. -Tool Shape: Type 27. -Thickness: 1/8 in. -Grit: 24. -Used With: Right Angle Grinder/Sander. Model Code Model Description AADia.:3 in Arbor Diam:3/8 in Abrasive Material:Aluminum Oxide Hardness Grade:Q Speed:19100 rpm Abrasive Trade Name:Fast Cut Applications:Cutting Cutting/Notching Applicable Materials:Metal Steel Quantity:25 per carton ABDia.:4 1/2 in Arbor Diam:7/8 in Abrasive Material:Aluminum Oxide Hardness Grade:R Speed:13300 rpm Applications:Cutting Cutting/Notching Applicable Ma