Cobalt S&D Reduced Shank Drill Bit
Cobalt S&D drill bits expands the size range capacity of a 1/2" 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 tough, high tensile strength materials. The 135º split point reduces thrust and eliminates walking at the drill point.