Diamond Drill Bit Set 1mm 1.5mm 2mm 2.5mm 20 Pieces 4 Sizes Compatible with Dremel Collets Included Twist Tip Jewelry Beach Sea Glass Shells

Assorted Pack of 20pcs. 4 Sizes 1mm 1.5mm 2mm 2.5mm Diamond Twist Drill Bit Jewelry Beach Sea Glass Shells Gemstones Lapidary

• Perfect for Jewelry Design Necklaces Earrings, Pendants, Bracelets with Sea Shells, Beach Glass, Rocks.
• Make Clean Holes in Glass, Gemstones, Rocks, Ceramic, Porcelain, Gemstones.
• Compatible with rotary tools, electric, cordless hand drills, upright drills, flex shafts, and rotary tools such as Dremel.

These bits are a very popular type and size used by Jewelry Designers for drilling a nice clean hole in Beach Sea Glass for making Earrings, Pendents and Bracelets. They have multiple layers of industrial diamond particles bonded to the tips which provides for longer drill life and are excellent for drilling completely through any thickness of Beach Sea Glass up to 1/2″ thick. These Bits can be used in any high speed Dremel-Type Rotary Tool or Small Precision Drill Press with an adjustable collet.