• Ideal for drilling from existing holes in pearls, coral, turquoise and other precious stones (cooling water add)
NOT suitable for direct drilling, since no cutting at the top are available!

Specifications / Dimensions:

• 1 x 0.8 mm drill
• 1 x 1.2 mm drill
• shaft diameter 2.35 mm
• Length: 44 mm
• Optimal working speed: about 18000-20000 r / min
• Set maximum allowed speed: 50,000 rev / minmin