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OEM Customized Tungsten Carbide Nozzles for Drill Bits. Customized Tungsten Carbide Nozzles: Made to customer drawings with over 15 years of shaping experience. High Hardness and Wear Resistance: Hardness 89.5~91 HRA with high impact toughness for durability. 100% Virgin Raw Material: Ensures superior quality and consistent performance in all products. Professional Production Line: Advanced technology with precision grinding and high polishing processes. Multiple Material Grades Available: Various grades like YG8 available based on specific customer applications. Excellent After-Sales Service: Professional support for material selection and sample testing until success.