QUAL1527 Features: * Counter bore * Material: High speed steel Dimensions: * 7/16"" Counter bore overall length: 7"" * 5/8"" Counter bore overall length: 7-1/2"" * 7/8"" Counter bore overall length: 8"" * 7/16"" Counter bore shank dimensions: 1/2"" W x 1/2"" D * 5/8"" Counter bore shank dimensions: 3/4"" W x 3/4"" D * 7/8"" Counter bore shank dimensions: 1"" W x 1"" D * Product weight: 2.7 lbs