The Triumph Twist Drill Co. Fractional Drill Bit features a precise 21/64" diameter (0.3281 inches) with jobber length design for versatile drilling applications.Triumph Twist Drill Co. Fractional Drill Bit21/64" diameter (0.3281 inches)Jobber length for standard drilling depthFractional sizing for precise hole dimensionsProfessional-grade constructionIdeal for metalworking woodworking and general drilling tasks where accurate 21/64" holes are required with reliable performance and durability.