The Vise Grip 10232CB Unibit is a 6-step cobalt step drill bit designed to drill multiple hole sizes in a single tool, with 1/16-inch increments for precise sizing. The cobalt construction delivers superior hardness and heat resistance, making it ideal for drilling through hard materials including cast iron and steel.
Perfect for creating holes for machine bolts, cotter pins, dowel pins, and rivets, this step drill bit reduces the need for multiple drill bits and delivers fast, clean results. The stepped design allows one bit to handle a range of hole sizes with ease and accuracy.