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CHENJIN 20PCS Emery Twist Drill With Four Electric Grinding Collets Diamond Drill Bit Rotary Tools 1mm 1.5mm 2mm 2.5mm For Sea Glass Stone Shell Gem Processing Jewelry Making in Saudi Arabia CHENJIN 20PCS Emery Twist Drill With Four Electric Grinding Collets Diamond Drill Bit Rotary Tools 1mm 1.5mm 2mm 2.5mm For Sea Glass Stone Shell Gem Processing Jewelry Making in Saudi Arabia CHENJIN 20PCS Emery Twist Drill With Four Electric Grinding Collets Diamond Drill Bit Rotary Tools 1mm 1.5mm 2mm 2.5mm For Sea Glass Stone Shell Gem Processing Jewelry Making in Saudi Arabia CHENJIN 20PCS Emery Twist Drill With Four Electric Grinding Collets Diamond Drill Bit Rotary Tools 1mm 1.5mm 2mm 2.5mm For Sea Glass Stone Shell Gem Processing Jewelry Making in Saudi Arabia CHENJIN 20PCS Emery Twist Drill With Four Electric Grinding Collets Diamond Drill Bit Rotary Tools 1mm 1.5mm 2mm 2.5mm For Sea Glass Stone Shell Gem Processing Jewelry Making in Saudi Arabia

CHENJIN 20PCS Emery Twist Drill With Four Electric Grinding Collets Diamond Drill Bit Rotary Tools 1mm 1.5mm 2mm 2.5mm For Sea Glass Stone Shell Gem Processing Jewelry Making

SAR 52
All electronics ship with US style plugs. You may need a voltage converter or a plug adapter.
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Special Features

  • Package contents: 20-piece set of emery twist drill bits, comprising five each of 1 mm, 1.5 mm, 2 mm and 2.5 mm sizes, with a matching brass collet for each size
  • Four versatile sizes suitable for all projects: ranging from 1 mm to 2.5 mm, covering everything from pilot holes to larger pendant holes. Excellent value pack for hobbyists, jewellery makers and craft enthusiasts.
  • Water cooling recommended: best used with water (immersion or dripping) to prevent overheating and extend drill bit life. Avoid dry drilling for best results.
  • Ideal for sea glass, gemstones and jewellery making: Drills clean holes in sea glass, shells, agate, quartz, amethyst and gemstones.
  • High-quality diamond grit coating ensures smooth, precise holes. The rotating drill bit design, featuring a matching drill head, ensures stable drilling without slipping or misalignment.

Description

Package contents: 20 diamond twist drill bits
Sizes: 1 mm, 1.5 mm, 2 mm and 2.5 mm

Water cooling extends drill bit life:
For thick materials such as glass and stone, the drill bit should be immersed in water or used with a continuous water flow to prevent overheating and cracking.

High-end coated tips:
Featuring high-quality diamond grit, these drill bits efficiently grind and drill through beach glass, stones, rock, ceramics and shells. The durable steel construction ensures long-lasting performance.

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