10 Piece 0.9mm Mini Micro Twist Drill Bits Set In High Speed Steel With Straight Shank Extra Long 80mm For Aluminum Alloy Dope Tiny Drill Bits For Electronics Jewelry Making And Small Metalworking
✔️ 10 pcs, 0.9mm dia/shank, 80mm total length, for aluminum
These mini twist drill bits are built from high-speed steel for durability and precision. The set includes 10 pieces with an extended 80mm overall length, ideal for reaching tight spots in electronics, jewelry making, aluminum work, and small metal projects. The twist design features a split point for self-centering and quick chip removal.
| Dimension | Metric | Imperial |
|---|---|---|
| Drill Bit Diameter | 0.9 mm | 0.04 in |
| Flute Length | 50 mm | 1.97 in |
| Shank Diameter | 0.9 mm | 0.04 in |
| Total Length | 80 mm | 3.15 in |
✅ 0.9mm diameter and 0.9mm shank for precise alignment
✅ 50mm flute length supports exact hole depth
✅ 80mm overall length enables access to tight spots
✅ High-speed steel offers heat resistance and wear resistance
✅ Twist design with split point enables self-centering and chip removal
✅ 10-piece kit for electronics, jewelry, and small metalworking
💡 What is a handy long-tail question about 0.9mm mini drill bits for electronics and jewelry?
In practice, this tiny bit shines in precision tasks on small parts and assemblies.
- Works on aluminum, copper, and other soft metals for clean holes
- Ideal for PCBs, jewelry components, and tiny mechanical parts
- Extended 80mm length helps reach recessed or tight areas