
- Assorted Pack of 20pcs. 4 Sizes 1mm 1.5mm 2mm 2.5mm Diamond Twist Drill Bit Jewelry Beach Sea Glass Shells Gemstones Lapidary
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Amazon
From $19.99 (3rd Party New)

From $19.99 (3rd Party New)

| Latest | $19.99 Apr 15, '16 |
| Highest | $64.00 Jun 11, '14 |
| Lowest | $9.99 Nov 26, '14 |
| Average | $18.75 (30d avg) $18.05 (90d avg) $18.50 (180d avg) $19.25 (365d avg) $19.77 (Lifetime average) |
| Added | Oct 23, 2013 |
30 day average: 28,765
90 day average: 30,822
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.