1mm Diamond Drill Bit Set, 30-Piece with 1/8" Shank & Case – Sea Glass, Shells & Gemstones

• 30 x 1mm Bits: Thirty 1mm diamond-coated bits.
• 1/8 Inch Shank: Fits Dremel and other rotary tools and flex shafts, no special collet required.
• Alloy Steel Body: Triple-layer diamond coating resists snapping and fast wear.
• Clean Holes: Reduces chipping in brittle materials.
• Storage Case: Keeps the bits organized.

• Materials: Sea glass, glass, seashells, gemstones, stone, rock, ceramic and porcelain.
• Tools: Dremel and other rotary tools, flex shafts and drills that take a 1/8 inch shank.

• Insert the Bit: Fit the 1/8 inch shank into your rotary tool's 1/8 inch collet or chuck and tighten it securely.
• Use Water: Drill with water to cool the bit, protect delicate materials and extend bit life.
• Start at an Angle: Begin at an angle to make a small notch so the bit doesn't wander, then go vertical slowly.
• Let the Bit Do the Work: Use light pressure and low speed for clean holes and longer-lasting bits.

• Sea Glass Jewelry: Drill beach glass for pendants, necklaces and earrings.
• Shells and Gemstones: Make hanging holes in seashells, gemstones and small stones.
• Beads and Bracelets: Drill beads and small pieces for bracelets and custom jewelry.
• Crafts and Keepsakes: Turn beach finds into keepsakes and handmade gifts.

• Bit Diameter: 1mm (0.039")
• Quantity: 30 bits
• Shank: 1/8 inch
• Body: Alloy steel with triple-layer diamond coating
• In the Box: 30 bits, organizer case with clear cover
• Recommended Use: Wet drilling, with water

Q: What size are these bits?
A: All 30 bits are 1mm (about 0.039 inch), ideal for fine detail and jewelry work.
Q: Will it fit my Dremel?
A: Yes. The 1/8 inch shank fits Dremel and most other rotary tools, flex shafts and drills with a 1/8 inch collet or chuck. No adapter needed.
Q: Do I need to use water?
A: Yes. Drill wet, with the piece under water or a steady drip. Water keeps the diamond coating cool, protects delicate materials from cracking and makes each bit last longer.
Q: How do I stop the bit from slipping on glass?
A: Start at an angle to cut a small notch, then bring the tool upright slowly once the hole has started.
Q: How long does each bit last?
A: Small diamond bits wear with use, which is why they come in multi-bit sets. Drilling wet, at low speed and with light pressure keeps each tip cutting longer.
Q: Can these drill sea glass and gemstones?
A: Yes. They are made for hard, brittle materials including sea glass, shells and gemstones.
Q: Is this set good for beginners?
A: Yes. It's easy to use and a good addition to a beginner's jewelry or craft toolkit.
Q: What is a 1mm bit best for?
A: 1mm suits thin wire, head pins and fine detail. If you need a bigger hole, step up to a larger size, because a hole can be enlarged but never made smaller.
Q: Has this product been tested for restricted substances?
A: Yes. An independent lab (Greatesting Service Shanghai, report GSL20241012011, October 18, 2024) tested a sample of our small diamond drill bits against the ECHA REACH Candidate List of Substances of Very High Concern. None were detected at the 0.1% limit. View the full test report (PDF).