Zonfer 30pcs 1mm Premium Diamond Drill Bit Cylindrical Burr Kit Jewelry Beach Sea Glass Shells Gemstones Lapidary

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  • 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 -Type Rotary Tool or Small Precision Drill Press with a 3 32" collet or adjustable collet.
  • Designers for drilling a nice clean hole in Beach Sea Glass for making Earrings, Pendents and Bracelets.
  • Experience needed, you may break few bits during practice. Use with water - do not run dry.

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