18mm Diamond Core Drill Bit – Dry Drilling for Granite & Stone
18mm Diamond Core Drill Bit – Dry Drilling for Granite & Stone
18mm Diamond Core Drill Bit – Dry Drilling for Granite, Marble & Concrete
Tackle tough drilling jobs with confidence using this 18mm Diamond Core Drill Bit. Engineered with high-quality brazed diamond particles on the cutting edge, this dry-use drill bit delivers fast, clean holes through granite, marble, concrete, artificial stone, pebbles, and more — making it an essential addition to any home improvement or DIY toolkit.
Key Features
- Premium Diamond Cutting Edge: Embedded fine-grit diamond particles provide exceptional sharpness and long-lasting durability, even on the hardest natural and engineered stone surfaces.
- Straight Round Shank Design: Compatible with the vast majority of standard hand electric drills and bench drills on the market — no adapters required for most setups.
- Large Chip Removal Port: The generous chip-clearance opening allows debris to evacuate freely during drilling, keeping your workspace clean and reducing the risk of material chipping or bit jamming.
- Dry Drilling Capability: Purpose-built for dry use — no water cooling required — saving you setup time and mess on the job.
- Corrosion-Resistant Red Coating: The protective red finish resists moisture and corrosion, extending the bit's service life and keeping it ready for the next project.
- Wide Application Range: Ideal for drilling marble, granite, concrete, artificial stone, pebbles, and similar hard materials in home renovation, workshop, and DIY handmade projects.
Specifications
| Item Type | Diamond Core Drill Bit |
| Material | High-Speed Steel body with brazed diamond cutting particles |
| Hole Diameter | Approx. 18 mm / 0.7 in |
| Total Length | Approx. 83 mm / 3.3 in |
| Shank Type | Straight Round Shank |
| Grit Type | Fine |
| Color | Red (corrosion-resistant coating) |
| Compatible Equipment | Electric hand drill, bench drill |
| Package Contents | 1 × Diamond Core Drill Bit |
| Country of Origin | Made in Mainland China |
Perfect For
- Home renovation and kitchen/bathroom tiling projects
- Installing fixtures through granite countertops or marble surfaces
- DIY stone crafts, handmade projects, and garden stonework
- Contractors and hobbyists working with hard natural or engineered stone
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Frequently Asked Questions
Q: Can this 18mm diamond core drill bit be used dry without any water cooling?
A: Yes — this drill bit is specifically designed for dry drilling. Its large chip removal port helps clear debris and manage heat buildup during use, so no water cooling system is needed for most standard applications on granite, marble, and concrete.
Q: What types of drills are compatible with this 18mm diamond drill bit?
A: The straight round shank design makes it compatible with the vast majority of standard hand electric drills and bench drills available on the market. Always ensure your drill chuck can accommodate the shank diameter before use.
Q: What materials can I drill through with this diamond core bit?
A: This bit is suitable for drilling through marble, granite, concrete, artificial stone, pebbles, and other similarly hard natural and engineered stone materials — making it versatile for home improvement, tiling, countertop installation, and DIY stone projects.
Q: How long is the drill bit and what is the hole size it creates?
A: The total length of the bit is approximately 83 mm (3.3 inches), and it creates a clean hole with a diameter of approximately 18 mm (0.7 inches) in the target material.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.