[5 Sizes for Your Various Needs]Therere 5 different diameters of auger drill bits, including 6mm, 8mm, 10mm, 12mm, 14mm. So you can choose the most suitable wood snake drill for the woodworking.[Hexagonal Shank Design] This design makes the hex shank wont slip during working, and the hex shank can be used with hand drills and bench drills. [Self-Directed Thread Head] The self-directed thread head of auger bits can help the drill bit be accurately and quickly positioned on the wood for easy drilling. [Central Solid&Wide Blade Auger Bit] The central solid design makes the drill bit stable and strong during the drilling, and the wide blade can provide faster drilling, easier chip removal and smoother hole walls. [High quality Helper for DIY] Made of high-carbon steel(65# ), these auger bits are rustproof and durable, and they can be used for processing all kinds of cork, hardwood and plastic materials.Theyre practical drilling tools for and woodworking lovers.