2mm & 3mm Diamond Drill Bit Set, 30-Piece with 1/8" Shank & Case – Sea Glass, Stones & Lapidary

• 15 x 2mm + 15 x 3mm: Two hole sizes, 30 bits in total.
• 1/8 Inch Shank: Fits Dremel and other rotary tools and flex shafts.
• Triple-Layer Diamond Coating: On a solid alloy steel body.
• Chip-Free Results: Light pressure plus water gives smooth, crack-free holes.
• Storage Case: Keeps the bits sorted and easy to reach.

• 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 Diameters: 2mm (0.079") and 3mm (0.118")
• Quantity: 30 bits: 15 x 2mm, 15 x 3mm
• Shank: 1/8 inch
• Body: Alloy steel
• Coating: Triple-layer diamond coating
• In the Box: 30 bits, storage case with clear cover
• Recommended Use: Wet drilling, with water

Q: How many of each size?
A: 15 bits at 2mm (about 0.079 inch) and 15 at 3mm (about 0.118 inch).
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: What materials can I drill?
A: Sea glass, gemstones, rock and stone, glass, ceramic and porcelain.
Q: Do I need a 3/32 inch collet?
A: No. These bits have a 1/8 inch shank, so use your rotary tool's 1/8 inch collet.