FEATURES: Make your next project a whole lot easier with these drill bits! The DeWALT Metal Drill Bits feature a black and gold coating to prevent rust. A tapered web design on the drill bits provide extreme durability to resist breakage. With a 3-flats shank to reduce spin-out in the chuck, the drill bits are made of tough high-speed steel for drilling into a variety of materials including plastic, wood, and metal. Add DeWALT's drill bits to your gear today. 135 degree split on drill bits provides greater durability to reduce breaking Black oxide construction offers greater wear-resistance Tapered web eliminates the frustration of drill bits spinning in the chuck Patented core diameter on drill bits reduce breakage No-spin shank on bits 3/16 in. Size markings above the shank on drill bits