Highest industrial quality for extended general-purpose grinding and long abrasive life on meals, castings, welded joints, rivets and rust. For use on most materials including stainless steel. Specially designed for working with conic surfaces. All have 1/8" shanks. No. 911: Shank Diameter: 1/8", Bit Diameter: 7/16", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card No. 932: Shank Diameter: 1/8", Bit Diameter: 3/8", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card No. 941: Shank Diameter: 1/8", Bit Diameter: 5/8", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card No. 945: Shank Diameter: 1/8", Bit Diameter: 3/16", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card No. 952: Shank Diameter: 1/8", Bit Diameter: 3/8", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card No. 953: Shank Diameter: 1/8", Bit Diameter: 1/4", Material: Aluminum Oxide, Pkg Qty: 2, Package Type: Card No. 971: Shank Diameter: 1/8", Bit Diameter: 5/8", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card No. 997: Shank Diameter: 1/8", Bit Diameter: 1/8", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card No. 8153: Shank Diameter: 1/8", Bit Diameter: 3/16", Thickness: 3/8", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card No. 8175: Shank Diameter: 1/8", Bit Diameter: 3/8", Thickness: 3/8", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card No. 8193: Shank Diameter: 1/8", Bit Diameter: 5/8", Thickness: 3/8", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card No. 8215: Shank Diameter: 1/8", Bit Diameter: 1", Thickness: 1/8", Material: Aluminum Oxide, Pkg Qty: 1, Package Type: Card