Variety and Organization. What more could you need? This 130-piece Drilling and Screw driving bit set offers a variety of the most commonly used drilling and driving bits all in one kit. Plus, the patented, Bit Grip Magnetic Bit Collar holds screws securely for one-handed use. Simply slide the collar onto a 2" impact bit for 4X Magnetic Force to hold fasteners securely. Includes convenient carrying case to keep your bits organized.