Features: Effective Drilling Design: Features a 100mm large diameter drill bit suitable for various materials including wood, plastic, and soft metals, enhancing drilling effectiveness by 20% with its unique helical structure. High Carbon Steel: Constructed from high carbon steel, offering 30% increased hardness compared to standard steel, ensuring sturdiness and extended usage time for professional use. Ergonomic Shaped Handle: Designed with a shaped handle for superior grip and 50% improved anti-slip capability, reducing fatigue during prolonged use, ideal for home repairs and small projects. Portable Storage Case: Comes with a lightweight and small plastic storage case measuring 15 x 10 x 5 cm, easy to transport and store, suitable for various mobile drilling needs. Wide Ranges of Applications: Perfect for a wide variety of projects from home maintenance to garden drilling, catering to both professional construction requirements and beginner tasks. Specifications: Component: High Carbon Steel Total Length:Approx.10cm/3.94'' Shank:6.35mm 1/4'' Hexagonal Size:5mm,6mm,8mm,10mm,12mm Package Includes: 5Pcs Auger Drill Bit note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.