10pc Extra Long HSS Drill Bit Set 150mm | 2mm–5mm Twist Bits
10pc Extra Long HSS Drill Bit Set 150mm | 2mm–5mm Twist Bits
10-Piece Extra Long HSS Drill Bit Set — 150mm Straight Shank Twist Bits
Take on deep drilling tasks with confidence using this 10-piece High Speed Steel (HSS) drill bit set. Each bit measures 150mm in total length — giving you the extended reach needed for woodworking, carpentry, metalwork, and DIY projects that standard-length bits simply can't handle. Compatible with most electric drills, rotary tools, and drilling machines, these versatile twist bits are a must-have addition to any workshop or toolbox.
Made in Mainland China.
Why Choose These Extra Long Drill Bits?
- Premium High Speed Steel (HSS) — Built for durability and consistent performance across a variety of materials.
- 150mm Extra Length — Ideal for reaching deep holes or tight spaces where standard bits fall short.
- Straight Shank Design — Fits securely into standard drill chucks and rotary tool collets for wobble-free drilling.
- Versatile Material Compatibility — Suitable for wood, aluminum, plastic, and other soft-to-medium-hardness materials.
- 10 Bits Included Across 5 Sizes — Get two of each size: 2mm, 3mm, 3.5mm, 4mm, and 5mm, so you're covered for virtually any project.
- Fine Twist Flute Design — Efficiently clears chips and debris for cleaner, faster holes.
Specifications
| Material | High Speed Steel (HSS) |
| Color | Silver |
| Total Length | 150mm per bit |
| Bit Sizes Included | 2mm, 3mm, 3.5mm, 4mm, 5mm (2 of each) |
| Shank Type | Straight Shank |
| Quantity | 10 pieces |
| Compatible With | Electric drills, rotary tools, drilling machines |
| Use | Wood, aluminum, plastic, and similar materials |
Package Includes
- 10 × HSS Twist Drill Bits (2mm, 3mm, 3.5mm, 4mm, 5mm — 2 of each size)
Important Notes
- Actual color may vary slightly from images due to monitor brightness and lighting conditions.
- Please allow for minor measurement tolerances (±0.5mm) due to manual measurement.
Learn More About Drill Bit Safety & Best Practices
For safe tool usage and workplace drilling safety guidelines, visit the OSHA Hand & Power Tools Safety Page.
Frequently Asked Questions
Q: What materials can these HSS drill bits be used on?
A: These High Speed Steel twist drill bits are suitable for drilling into wood, aluminum, plastic, and other soft-to-medium materials. They are not recommended for hardened steel or masonry.
Q: Are these drill bits compatible with Dremel and other rotary tools?
A: Yes — the straight shank design allows these 150mm HSS drill bits to be used with most standard rotary tools (including Dremel-style tools), electric drills, and drilling machines that accept round shanks in the appropriate collet or chuck size.
Q: Why are extra long 150mm drill bits useful?
A: Extra long drill bits are ideal for deep-hole drilling, through-board woodworking, and reaching into confined spaces or cavities where standard-length bits cannot reach. The 150mm length makes these bits especially valuable for carpentry and cabinetry work.
Q: How many bits are included and what sizes?
A: The set includes 10 drill bits total — 2 of each size: 2mm, 3mm, 3.5mm, 4mm, and 5mm — covering the most common small-diameter drilling needs in one convenient set.