Loading…

Waheynao Coolant Tungsten Carbide Drill Bits with High Quality. High Quality Material: Raw micro grain tungsten carbide with 88% WC and 12% Co for high hardness and durability. Super Coating Options: Available with TiSiN, TiAlN, AlTiN, TiCN, or Blue Nano Coating for enhanced performance. Wide Diameter Range: Diameter range from 1mm to 30mm with precise tolerance of +0.0mm/-0.008mm. Versatile Application: Suitable for drilling copper, cast iron, carbon steel, tool steel, mold steel, and stainless steel. Certified Quality: Top quality in China with ISO9001-2008 and SGS certificates. Precise Geometry: 30-degree helix angle, 140-degree point angle, and 2.05% margin on the flute.