Skil SMXS8501 Drill Bit Set, 120 PieceThis 120 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. Highlights: A variety of the most commonly used drilling and driving bits all in one kit Includes convenient carrying case to keep your bits organized and easy to access Simply slide the collar onto a 2 in. impact bit for 4X