Carbide Drills — 3×D & 5×D, External & Internal Coolant
ZCCCT (Zhuzhou Cemented Carbide Cutting Tools) is a leading Chinese manufacturer of cemented carbide cutting tools. The GD series universal twist drills are engineered for high-performance drilling across a wide range of materials including steel, stainless steel, cast iron, and non-ferrous metals. These solid carbide drills feature precision-ground geometries, advanced coatings, and optimized flute designs for efficient chip evacuation and extended tool life. Available in 3×D and 5×D drilling depths with both external and internal coolant options to suit various machining applications.
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