The Triumph Twist Drill Co. Wire Gauge Drill Bit features 12J wire gauge sizing with a precise .1890 inch diameter in a versatile jobber length design.Triumph Twist Drill Co. Wire Gauge Drill Bit12J wire gauge size with .1890 inches diameterJobber length for standard drilling applicationsProfessional-grade construction for precision drillingSKU: 012412 UPC: 086839124124Ideal for metalworking machining and precision drilling applications where accurate hole sizing is critical. The jobber length provides excellent balance between rigidity and reach for most drilling tasks.