The RYOBI 120-Piece Drill and Impact Rated Drive Kit is uniquely designed with a variety of bits to cover a wide range of applications. This set is great for drilling into wood, metal, and plastic. The Black Oxide Bits included provide a longer life and faster drilling. The 1 in. bits fit perfectly into the Magnetic Bit holder for added control and versatility. The 2 in. bits feature a TORSION ZONE that is engineered to absorb the high torque and demand that comes with the use of an impact driver. All bits are conveniently stored in three separate storage cases, so you don't have to lug one bulky case around.