20Pcs 1mm/7Pcs, 2mm/7Pcs, 3mm/6Pcs, 150-Grit Diamond Drill Bits 1/8 Shank Compatible with Dremel for Drilling Grinding Glass Stone Jewelry Metal Diamond Tip
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- Premium Diamond Coated Tips - Features high-quality diamond particles for efficient grinding and drilling through beach sea glass, stone, rock, ceramic, and seashells. Durable steel construction ensures long-lasting performance.
- 1/8"(3mm)shank compatible with Dremel rotary tool 1/8"(3.175mm) collet.Ideal for precision drilling, engraving, and deburring in jewelry making, crafts, and DIY projects.
- Versatile, 1mm, 2mm, 3mm tip sizes - Perfect for detailed work on small stones, sea glass, and delicate materials. Great for enlarging holes or creating precise openings in beads and pendants.
- Water Cooling Recommended - Works best when used with water (submerged or with a drip) to prevent overheating and extend bit life. Avoid dry drilling for optimal results.
- 20-Piece Value Pack - Affordable bulk set with a storage case. Replace worn bits easily—ideal for hobbyists and professionals who need reliable, cost-effective grinding tools.
Estimated shipping
Select a product to estimate shipping.Sworker 20-Piece Diamond Drill Bit Set with Plastic Case, EVA Slotted Insert and Hanging Hook, 1mm-7Pcs, 2mm-7Pcs, 3mm-6Pcs.
Specifications Head Diameter: 1mm / 2mm / 3mm Total Length: 45mm Diamond Grit: 150Grit, Shank Diameter: 3mm Compatible with Dremel and all other rotary tools with a 1/8" (3.175mm) collet
Drilling Capacity 1mm Bit: Drills 1.3mm holes × 7mm deep 2mm Bit: Drills 2.3mm holes × 10mm deep 3mm Bit: Drills 3.3mm holes × 20mm deep
Diamond Coating Note The actual drilled diameter is 0.3mm larger than the nominal size (e.g., 1mm bit drills a 1.3mm hole) due to a 0.15mm-thick diamond coating applied uniformly around the drill tip.
Multi-Functional Design: 1mm and 2mm bits, the taper between the drill head and shank can be used for chamfering.
Extended Depth Capability: The 3mm diamond-coated bit has a 10mm coating length but can drill to a 20mm depth due to its uncoated 3mm shank.
WET DRILLING IS MANDATORY for most materials. NEVER use dry on thick or hard materials to avoid overheating and instant destruction of the bit.
Dry Drilling Exception: Permissible only for very thin, delicate materials (e.g., seashells under 1-2mm).
Cooling Method: Place workpiece in a shallow tray. Submerge only the drilling area with ~1mm of water. Avoid deep water to prevent hazardous splashing into tool electronics. Alternatively, continuously drip water onto the drilling point.
Max speed: 40,000 RPM.
Recommended: Use a Drill Press for stability to prevent skidding, bit damage, and material breakage.
Handheld Technique (if no press): Start at a 45° angle to grind a small starter groove. Gradually tilt to vertical and continue drilling.
Precautions: Always wear safety goggles.
Used on these materials Agate, aluminum, amethyst, ceramic, coral, diamond, fused glass, gem, glass, granite, jade, jewelry, metal, plastic, porcelain, pottery, pvc, quartz, resin, rubber, sea glass, sea pottery, shell, slate, stained glass, steel, stone, talc, wood and so on.
Product details
| Main Specification | |
|---|---|
| Included Components | 20pcs 1mm-7pcs or 2mm-7pcs or 3mm-6pcs or 150-grit or 1 slotted plastic box |
| Manufacturer | Sworker |
| Unit Count | 20 Count |
| Surface Recommendation | Glass Stone Jewelry Metal Ceramic Porcelain |
| Cutting Diameter | 3 Millimeters |
| Shank Type | Straight |
| Tool Flute Type | Spiral |
| Brand | Sworker |
| Number of Pieces | 20 |
| Material | Steel with 154-Grit Diamond Coating |
| Finish Type | Diamond Coating |
| Product information | |
| Set Name | 20pcs (1mm/7, 2mm/7, 3mm/6) Diamond Drill Bit Set |
| Technical Details | |
| Part Number | J150-123-776 |
| Material Type | Steel with 154-Grit Diamond Coating |
| Style | |
| Finish Types | Diamond Coating |
| Measurements | |
| Item Dimensions | 1.77 x 0.12 x 0.12 inches |
| Others | |
| Product Type | Masonry Core Drill Bits |