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8 1/2 Inch PDC Drill Bit Manufacturer Direct Supply. Ultra-High Wear Resistance: Diamond layer 2.0-3.0mm thick offers 2.5x industry standard wear resistance. Impact-Resistant Steel Body: High-strength alloy steel with arc transition increases impact toughness by 30%. Flexible Customization: Supports non-standard diameters (4-26 inches) and blade counts (3-8 blades). Fast Delivery: Standard and customized models delivered within 15 days. Wide Application Range: Suitable for oil & gas, geothermal, coal bed methane, and hard rock mining. Cost-Effective Design: Steel body construction offers lower cost compared to matrix body bits. Customized Color Options: Color can be customized to meet specific customer requirements.