This item features: -Excellent for form holding. -Allows heavier downfeeds and faster traverse rates. -Exceeds standard wheels when grinding materials 50 Rockwell C and harder. -In tool room applications, the AS3 will yield better results in dry grinding than conventional abrasives. -Tool Shape: Type 1. Model Code Model Description AADia.:10 in, Thickness:1 in, Arbor Diam:3 in, Abrasive Material:Ceramic Aluminum Oxide, White Aluminum Oxide, Cubitron™ 321 Ceramic, White Premium Aluminum Oxide, Grit:46, Hardness Grade:K, Speed:2674 rpm, Applications:Ideal for drying grinding, Grinding, Applicable Materials:Hastalloy, Iconel, Stellite, Waspalloy, Hardened Tool Steel, Sprayed Metal Coating, Hardened Tool Steels, Sprayed Metal Coatings, Quantity:2 per carton ABDia.:12 in, Thickness:1 1/2 in, Arbor Diam:5 in, Abrasive Material:Ceramic Aluminum Oxide, White Aluminum Oxide, Cubitron™ 321 Ceramic, White Premium Aluminum Oxide, Grit:46, Hardness Grade:H, Speed:2228 rpm, Applications: