41/64 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank)

41/64 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank) . Expands the size range capacity of a 1/2 inch portable drill chuck. Common flute and overall length for minimal adjustment during tool changes. Precision ground for high degree of concentricity between shank and body diameter. Ideal for drilling in low and medium tensile strength materials.