& Watch Repair Drill Bits | Ultra-Precision 0.3mm-1.6mm HSS | Mini Spiral Set

This precision mini HSS spiral drill bit set is crafted for intricate, detailed work requiring absolute accuracy. The micro-sized bits from 0.3mm to 1.6mm are perfect for delicate materials, offering ...
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Questions about this product
- Will these mini drill bits fit my standard Dremel or rotary tool?
- Yes, they will. The bits feature a standard 3.175mm (1/8 inch) straight shank that fits most rotary tools, micro-drills, and hand-held pin vises. Just make sure your tool's collet can tighten down to this shank size.
- What materials can I drill with these bits, and how fast should I run them?
- These high-speed steel bits work best on soft metals, plastics, wood, acrylics, and PCBs. For these micro diameters, we recommend running your tool between 10,000 and 30,000 RPM. Avoid hardened steels, as they will dull or snap these delicate, ultra-fine tips.
- What is the exact range of drill bit sizes included in this precision kit?
- This set includes micro-precision bits ranging from 0.3mm up to 1.6mm in diameter. The ultra-fine sizes let you drill clean, burr-free pilot holes in tiny watch components and jewelry. They come in a compact, organized storage case to keep them safe.
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