Our Black and Gold accessories sets now come in Tough Case+ system, the latest addition to our accessory storage line. The Tough Case system is a connectable case system designed to optimize storage space and keep your bits organized. The patented bit-bar design allows for easy bit removal and the clear lid allows you to see inside at a glance. Featuring black and gold coating for preventing rust. The tapered web design provides extreme durability to resist breakage. The bits feature a 3-flats shank to reduce spin-out in the chuck. The black and gold metal drill bits are made of heavy-duty high speed steel for drilling into a variety of materials including plastic, wood, and metal. Each bit features a 135 degree split point tip design to help reduce walking.