5-Piece Extra Long Drill Bits, 150mm HSS Twist Drill Bit Set for Wood Metal Plastic and Aluminum - Straight Shank High Hardness Spiral Drill Bits in 2/3/3.5/4/5mm Diameters

• 【Premium Material】Made from robust high-speed steel, these twist drill bits offer exceptional high hardness and durability for long-lasting performance.
• 【Complete 5-Size Set】This 5-piece set includes the most needed diameters: 2, 3, 3.5, 4, and 5mm. Each bit is 150mm extra long, perfect for drilling deep holes in various projects.
• 【Easy & Efficient Use】The spiral flute design ensures fast chip removal for smoother drilling. The straight shank fits securely into most standard hand drills and impact drills.
• 【High-Performance Design】Features sharp tips and a hardened construction for fast, precise, and effortless drilling through tough materials with minimal effort.
• 【Versatile Application】Ideal for drilling a wide range of materials including wood, plastic, aluminum, and mild steel, making it a perfect all-purpose DIY and workshop drill bit set.

Product Specifications ✔Material & Build: Crafted from high-speed steel (HSS), these bits are engineered for high hardness, superior wear resistance, and long-term durability. They resist bending and stay sharper for longer. ✔Complete Size Set: The set includes the five most frequently used diameters: 2mm, 3mm, 3.5mm, 4mm, and 5mm. This covers the vast majority of common drilling needs. ✔Optimal Dimensions: Each twist drill bit features a practical 150mm (approx. 6-inch) extra long shaft. This length provides better reach and control, making it perfect for drilling deeper holes where standard bits fall short. ✔Smart Design: The efficient spiral flute design ensures fast and smooth chip removal during drilling, which reduces heat build-up and prevents clogging. The standard straight shank is universally compatible with all common hand drills and impact drivers. ✔What's Included: You will receive 5x extra long HSS drill bits . Where to Use It (Application Scenarios) ✔Woodworking & DIY Projects: Ideal for furniture assembly, crafting, shelf installation, or creating pilot holes. The long wood drill bits are perfect for reaching into tight spaces or drilling through thicker timber. ✔Metalworking & Fabrication: Capable of drilling through thin sheets of aluminum, plastic, and mild steel. They are excellent metal drill bits for light fabrication, model making, or automotive repairs. ✔General Home Maintenance: A must-have for countless household tasks. Use them for hanging pictures, installing locks, assembling flat-pack furniture, or making repairs to fences and decking. ✔Workshop & Professional Use: Their robust construction makes them reliable for frequent use. The extra long design is invaluable for plumbing or electrical work where you need to drill through joists or reach awkward spots.