Tapered Drill Bits - Page 2 of 2 - ProDrill
Tapered Degree: 6° Carbide Dimension: 12mm*8mm; Water Holes: 2 on side; Premium designs and steel and premium tungsten carbide insert grade T6 supplied by Boart Long year , tungsten carbide code No. YK05 supplied by Zhuzhou 601 factory , Offers industry-leading strength and penetration rates for more productivity .
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