Air Hammer Drilling Tools Tungsten Carbide Rotary Tricone Drill Bit for Water Well Oil Drilling. Wide Size Range: Sizes range from 3 7/8 inches to 26 inches covering almost all IADC codes. Customized Color: Color is fully customizable to meet specific client requirements. Fast Delivery: Usually 25 days for production; only 2-3 days if stock is available. OEM/ODM Service: Full OEM and ODM services available to satisfy specific product requests. Strict Quality Control: Experienced QC team performs strict inspection and testing on every order. Free Replacement: Free replacement provided once failure is confirmed caused by product quality. Multi-Formation Capability: Suitable for soft to hard formations including sticky and abrasive rocks. High Penetration Rate: Advanced cutting structure design ensures high bit penetration rates.