[High Quality] - Carbon steel material (65#), with titanium coating for long life, drill holes quickly and cleanly in hard or soft wood. [5 Sizes] - Includes 5 different diameters: 6mm, 8mm, 10mm, 12mm, 14mm. You can choose the appropriate drill bit according to your needs while working. [Hexagonal Design] - Hexagonal design, not easy to slip and stronger [Advantages] - Reasonable structural design, smooth and easy drilling, high use efficiency, smooth hole wall after drilling and smooth chip removal < p>[Practical] - 5pcs hex shank drill bit (230mm), suitable for wood, plastic and aluminum alloy. A good helper as a woodworking drill or other DIY drilling tool