Tapered Drill Bits - ProDrill
Tapered Degree: 12° Carbide Dimension: 7mm*8; Carbide Design: Semi-Ballistic; Water Holes: 2 on front, 1 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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