9/16 inch-1 inch 5 Piece Cobalt Reduced Shank Drill Bit Set, Plastic Case Pouch, Qualtech, Poudwdco

Made of heat resistant cobalt and ground to a heavy duty 135 split point. 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. Expands the Size range capacity of a 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.