Dewalt Extreme Flat Wood Drill Bits have an extra thick robust steel shank for outstanding durability and chamfered outer cutting spurs for clean, very fast drilling and extended drilling life. The precision ground central point has an optimised design for faster material penetration and increased drilling speed. Ideal for the rapid drilling of holes in wood, for door locks, mortising, electrical and plumbing work. Suitable for natural hardwood and softwood, chipboard and other man-made materials. This set comes in the Medium ToughCase ready to fix to the top of your existing Tstak case/tough case system. The DEWALT ToughCase+ Accessory Storage solutions have premium features to help keep drilling and fastening bits organized. The system includes four container sizes; the Small Bulk Storage Container, Small ToughCase + Container, Medium ToughCase + Container, and Large ToughCase + Container for unlimited configurations. The ToughCase + Containers feature newly-designed bit storage, with a unique bit bar position that allows for easy removal of bits. Clear lids let users see what's in the case at a glance. In addition, the Small, Medium and Large ToughCase + Containers include a proprietary latch system to connect to each other for optimized storage space.