Special Application Custom Length Internal Cooling Deep Hole Drills CNC Bits Solid Carbide Long Drill for Metalworking

Special Application Custom Length Internal Cooling Deep Hole Drills CNC Bits Solid Carbide Long Drill for Metalworking. Custom Length Capability: Customizable up to 50x diameter length with minimum diameter of 0.6mm. Internal Cooling Design: Effective cooling at cutting edge ensures optimal chip removal and reduces heat. Premium Raw Materials: 100% original alloy rods from Guhring, Kennametal, and other top brands. Advanced Coating Options: Available in AlTiN, AlCr-based, TiSiN, and AlCr-Blue for enhanced hardness. Wide Specification Range: Diameters D3-D25mm with 3D, 5D, 8D, and 12D length options. Non-Standard Customization: Manufacturing based on customer drawings or samples is fully supported. High Precision Performance: Ideal for deep-hole drilling in alloy materials with superior surface finish. Trusted Manufacturer: Over 15 years experience with 100% on-time delivery commitment.