Drilax 30-Piece Diamond Drill Bit Set, 2mm and 3mm, 1/8 in Shank Review
Thirty diamond-coated bits in two sizes for drilling glass, gemstones, and ceramic with a Dremel or rotary tool.
| Pieces | 30 bits |
|---|---|
| Sizes | 15x 2mm, 15x 3mm |
| Shank | 1/8 in |
| Body | Alloy steel |
| Coating | Reinforced diamond |
| Fits | Dremel, flex shaft, rotary |
| Best for | jewelry makers drilling glass and gemstones |
Product Overview
This Drilax 30-piece set drills clean holes in glass, gemstones, ceramic, and stone using diamond-coated bits. It suits jewelry makers, lapidary artists, and crafters who need backup bits for detailed work. Fifteen 2mm and fifteen 3mm sizes give flexibility, and every bit uses a standard 1/8 inch shank.
The 1/8 inch shank fits Dremel tools, flex shafts, and rotary systems, so setup is simple. Alloy steel bodies carry a reinforced diamond coating for cutting hard materials. A storage case keeps the bits sorted, and the maker advises water cooling and light pressure for clean results.
Score Breakdown
This verdict is based on the manufacturer's stated specifications, the current Amazon listing and its product images, the confirmed materials and design, real buyer ratings, and our research into the product category. Scores are consistent editorial judgments, not laboratory measurements, and we did not receive a paid sample.
Key Features
Fifteen 2mm and fifteen 3mm bits cover common small jewelry holes.
A reinforced diamond layer grinds glass, stone, and ceramic.
A 1/8 inch shank fits Dremel tools, flex shafts, and rotary systems.
Thirty pieces keep high-volume makers working without pauses.
An included case keeps bits sorted and ready to use.
Design and Build Quality
Each bit is built from alloy steel and finished with what the maker calls a triple-layer, reinforced diamond coating. That coating does the grinding, so the bits abrade rather than cut. The design targets consistent strength and longer life on hard, brittle surfaces.
The set splits evenly into two sizes: fifteen 2mm and fifteen 3mm bits. Having many of each means backups on hand for high-volume work, so a worn or dulled bit gets swapped without stopping. Both sizes suit small jewelry holes.
All thirty share a standard 1/8 inch shank. That fits Dremel rotary tools, flex shafts, and similar hobby systems without adapters. A storage case holds the bits sorted and accessible, which helps keep a small studio or mobile setup organized.
Performance in Everyday Use
Makers value diamond bits for grinding holes in fragile material without cracking it. On sea glass, shells, gemstones, and ceramic, the coating grinds slowly and cleanly. The maker says light pressure and an angled start reduce chipping in delicate pieces.
Water cooling is central to performance here. The maker advises drilling with water to cool the bit and clear grit, which extends tool life and keeps holes smooth. Skipping it risks overheating the coating and cracking the workpiece.
Honest limits remain. Diamond coating wears with use, so bits are consumable, which is why the set includes many. Progress is slow by design on hard stone. These points come from the listing and typical use, not bench testing.
How It Performs: The Evidence
| Decision factor | What we found | Evidence and measurement | Score | Why it matters |
|---|---|---|---|---|
| Two useful sizes | Fifteen 2mm and fifteen 3mm | Maker stated | 8.6 | Fifteen 2mm and fifteen |
| Diamond coating | A reinforced diamond layer g | Maker stated | 8.6 | A reinforced diamond lay |
| Universal shank | A 1/8 inch shank fits Dremel | Maker stated | 8.6 | A 1/8 inch shank fits Dr |
| Plenty of backups | Thirty pieces keep high-volu | Maker stated | 8.6 | Thirty pieces keep high- |
| Storage case | An included case keeps bits | Maker stated | 8.6 | An included case keeps b |
Who Should Buy It
- Jewelry and pendant making
- Sea glass and shell drilling
- Gemstone and rock work
- Ceramic and porcelain holes
- High-volume craft studios
- fast drilling or dry, uncooled use
- Diamond coating wears with use
- Drilling hard stone is slow by design
- Water cooling is needed for best life
- Specs are maker-stated, not lab-tested
Full Specifications
How It Compares
| Feature | Generic | Typical budget | Premium option |
|---|---|---|---|
| Pieces | 30 bits | Basic | Better |
| Sizes | 15x 2mm, 15x 3mm | Basic | Better |
| Shank | 1/8 in | Basic | Better |
| Body | Alloy steel | Basic | Better |
Alternatives Worth a Look
For jewelry makers and lapidary hobbyists, this 30-piece Drilax set is a practical stock of diamond bits. Splitting evenly into 2mm and 3mm sizes covers common small holes, and having fifteen of each means backups for high-volume work. The 1/8 inch shank fits Dremel and flex-shaft tools without fuss, and the case keeps things sorted. Diamond coating grinds glass, gemstones, and ceramic cleanly when you follow the water-cooling and light-pressure advice. The trade-offs are inherent: diamond bits are consumable and wear over time, and progress on hard stone is slow. Skipping water cooling risks cracks and shortened life. As a working supply of small diamond bits, it looks well judged. Specs are maker-stated, not tested.
Frequently Asked Questions
What materials can these diamond bits drill
The maker lists glass, sea glass, shells, gemstones, rocks, ceramic, and porcelain. The diamond coating grinds these hard, brittle surfaces rather than cutting them. It is aimed at jewelry and lapidary work, so soft materials like wood are outside its intended use.
Do these fit a Dremel rotary tool
Yes. Every bit uses a standard 1/8 inch shank, which the maker says fits Dremel tools, flex shafts, and rotary systems. That covers most hobby drills and home studio setups, so the set works out of the box without adapters or extra collets in most cases.
Why do you need water when drilling glass
The maker advises water cooling to keep the bit and workpiece cool and to clear grit. Cooling reduces heat that can crack fragile glass or stone and extends the coating's life. Drilling dry risks overheating the diamond layer and chipping delicate pieces.
What sizes come in the 30-piece set
The set splits evenly into fifteen 2mm bits and fifteen 3mm bits. Both are small sizes suited to earrings, pendants, jump rings, and craft holes. Having many of each gives backups, so a dulled bit gets swapped without stopping a project.
How do you get clean holes with these bits
The maker recommends water cooling, starting at an angle, then bringing the bit upright, and applying light pressure. That approach reduces chipping in fragile materials and helps the diamond coating last. Rushing or pressing hard tends to crack the piece and wear the bit faster.
This review draws on the maker's stated features and the product listing. Details such as the 2mm and 3mm sizes, alloy steel body, diamond coating, 1/8 inch shank, and water-cooling advice are as described by the seller, not independently lab-tested. Any score is an editorial judgment based on the described design, not a measured result.