Busch #4203 Twist Drill Bit - Tungsten Carbide - 2.35mm Shaft


#4203 tungsten drills especially suit harder organic materials such as coral & farmed pearls (with hard centre/implants).

Recommended Speed: 5,000 - 9,000 r.p.m. (drilling freehand) 8,000 -14,000 r.p.m. (via drill-press).

*Tungsten carbide drills offer superior drilling ability and wear resistance, making this a lasting investment in your harder material drilling applications!

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