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5 Blades 9-7/8 Inch PDC Oilfield Drill Bit Wear-Resistant 250.8mm. 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. Versatile Application: Suitable for oil & gas, coal bed methane, hard rock mining, and water well drilling. Wide Size Range: Available in sizes from 4 inches to 26 inches with various cutter sizes.