Brazed Carbide Tip Gundrill: Heavy-Duty Deep Hole Drilling Solution. Heavy-Duty Deep Hole Drilling: Specialized brazed carbide tip gundrill designed for automobile industry deep hole applications. Wide Diameter Range: Available in diameter range from D2mm to D45mm to suit various drilling needs. Flexible Length Customization: Standard ratios 30xD to 50xD available; non-standard up to 100xD or longer supported. Optional PVD Coatings: Tip material offers TiN and TiAlN coating options for enhanced performance. Efficient Coolant System: Single internal cooling oil hole delivers high-pressure coolant directly to the cutting zone. Full Customization Options: Supports minor, flexible, and full customization including designs and samples. OEM and ODM Services: Manufacturer offers both OEM and ODM services with 2 R&D engineers. Strict Quality Control: 100% visual and function inspection for all finished products with traceable raw materials.