KingTool 400 PCS Drill Bit Set with Slide Drawer CaseConvenient & Versatile This 400 piece drill bit set features a sliding drawer box design for increased capacity and easy organization. It includes a wide range of bits for metal, wood, and masonry, making it ideal for both DIY enthusiasts and general home repairs. High Quality Materials Made from high speed steel with titanium and black oxide coatings, the drill bits offer enhanced precision, wear resistance, and durability when working on wood or