Industrial quality aluminum oxide mounted stones in the most popular shapes. All feature a 1/4" shank. Perfect for deburring pipe, grinding recessed areas, and other special grinding jobs. Can be used on electric drills and die grinders.1 per card. No. 6150: Size: 3/4" x 1", Shank Diameter: 1/4", Pkg Qty: 1, Package Type: Card No. 6151: Size: 1" x 1/2", Shank Diameter: 1/4", Pkg Qty: 1, Package Type: Card No. 6152: Type: Round Cone, Size: 3/4" x 1-1/8", Shank Diameter: 1/4", Pkg Qty: 1, Package Type: Card No. 6153: Type: Pointed Cone, Size: 11/16" x 1", Shank Diameter: 1/4", Pkg Qty: 1, Package Type: Card No. 6154: Type: Tapered Cone, Size: 11/16" x 1-1/4", Shank Diameter: 1/4", Pkg Qty: 1, Package Type: Card No. 6155: Type: Half Round, Size: 3/4" x 5/8", Shank Diameter: 1/4", Pkg Qty: 1, Package Type: Card No. 6156: Type: Round, Size: 1" x 1", Shank Diameter: 1/4", Pkg Qty: 1, Package Type: Card No. 6157: Type: Tapered Cup, Size: 1" x 5/8", Shank Diameter: 1/4", Pkg Qty: 1, Package Type: Card No. 6158: Type: Tapered Wheel, Size: 1-1/4" x 1/4", Shank Diameter: 1/4", Pkg Qty: 1, Package Type: Card No. 6159: Type: Straight Cup, Size: 3/4" x 3/4", Shank Diameter: 1/4", Pkg Qty: 1, Package Type: Card