Diamond Drill Bits for Stone and Glass – 30 Pc Set (1mm, 2mm, 3mm) 1/8 Shank for Dremel & Rotary Tools – Jewelry Making, Gemstone, Sea Glass and Lapidary Drill Bits Kit

I’m very happy with this DRILAX diamond drill bit set. The case arrived well-packaged, and the bits were neatly organized and clearly labeled by size (1mm, 2mm, and 3mm). The diamond coating looks even and well-applied, with no visible defects. I used these on glass and ceramic, following the instructions to start at an angle and use water, and they performed exactly as expected. The bits cut cleanly without chipping, and none of them overheated or lost their grit during use. For small, precise holes, they work extremely well. For the price, getting 30 pieces is a great value, especially if you do detailed or repetitive work like crafts, tile, jewelry, or DIY projects. The storage case is also a nice bonus for keeping everything organized. Just be sure to use water and take your time—these bits do a great job when used properly. I would definitely buy this set again and recommend it to anyone needing small diamond drill bits

I’m really happy with the Drilax Diamond Drill Bits set. The variety of sizes is perfect, especially for detailed work, and everything arrived exactly as described. I used them on glass and small stones, and they cut cleanly without chipping when used with light pressure. The bits feel solid and well made, not flimsy or disposable like some other sets I’ve tried. They’re also very easy to use, even if you’re newer to jewelry making or lapidary work. The 1/8 inch shank fits my Dremel perfectly, and the bits stay secure while drilling. With a little water for cooling, they perform smoothly and consistently. Overall, this is a reliable, well thought out set that works exactly as described and is a great addition to any jewelry making or craft setup.

Very nicely works well

I used these Drilax Diamond Drill Bits to drill small holes in sea glass for a project, and they did a fantastic job. The bits cut cleanly and precisely without cracking or chipping the delicate glass. With a little water for cooling and a steady hand, I was able to get smooth, professional-looking results. Highly recommend for anyone working with glass, shells, or other fragile materials. Great value and performance!

These drills are great. Drill perfect holes thru my tumbled stones so I can make jewelry. They came in three sizes all perfect fit for my needs and the quality was better than expected along with the price. Have done over a dozen still using one drill as none dulled or broke. Very sharp. Will buy again

New Review: After more attempts and talking to a professional glass worker I have discovered the trick to drilling through glass with these. Set the drill to the maximum speed possible. A Dremmel tool might not be at the fastest speed setting because it is faster than a drill. Firmly anchor the glass and the drill. The glass should be on a flat wood surface. Lubricate the glass surface with water. Slowly bring the drill to the surface of the glass. Do not apply any pressure. You should be supporting most of the weight of the drill. Initially the water lubricant will turn black. For most diamond drill bits this would mean that they are broken. For this set, it does not mean they are broken. I think the diamonds are coated with a thin layer of titanium or steel that is rubbing off. Replace lubricant every few minutes. After a few replacements it will turn white with drilling instead of black. The drill will drill faster. After you are halfway through, turn the glass over and drill from the other side. It takes about 10-30 minutes to drill through 2mm of glass. This is pretty slow, but it is in my price range so that is what matters in the end. Old Review: I bought these to use to cut FTO coated float glass. The instructions for using diamond drill bits are to use a low rotation speed, and apply only 8-16 pounds of pressure. Using a drill press I was not able to drill through glass using only 16 pounds of pressure, the bit never made it past the surface. When I applied more pressure the diamonds broke off from the surface and acted as a grit to abrade the surface. This did allow the drill to bite into the glass, but it took a very long time (about 15 minutes when higher quality products only take 3) at high pressure and RPM to drill through the glass. Unfortunately this amount of pressure also caused chipping around the edges of the hole and blowout at the other end of the hole, creating an ugly break cone. Each bit could only drill one hole this way before being discarded. Some bits snapped before they drilled through the glass. This product is useless to me. It is possible that these bits could cut into softer stone or sea glass, but for float glass it does not work.

Bought these for my daughter. She recently got an engraving pen. I saw these and figured I'd give them a try. They fit well and work fine. They cut with precision. I like how it comes with all different sizes, great variety. They're very well made and get the job done.

Great drills . Really do the job.. keep wet…..

Stabile Bohrer die gut bohren.

Perfectas para bisutería; cumplen su función

Take your time, start at an angle and then vertically and keep it wet, we drilled in dish of shallow water. Took about 10 mins to go through 4mm of glass, could have been quicker but didn’t want to apply too much pressure .

All as ordered

Nice product. Excellent price.