
Baoke Wholesale Drilling Depth 3D 3xd 5D 5xd Solid Carbide Drills with Coolant Holes for CNC Tools Internal Cooling Systems Internal Cooling for Hardness Steel. Customization Options: Accepts custom logo, package, and non-standard tool designs based on customer samples or drawings. Fast Delivery: Standard stock items delivered within 2 days; non-standard items within 10 days. High Hardness Capability: Suitable for machining steel, stainless steel, cast iron, aluminum, and wood with hardness up to 68 HRC. Internal Cooling System: Features coolant holes for internal cooling, ideal for CNC tools and hard steel applications. Global Shipping: Supported by UPS, FedEx, DHL, TNT, EMS, and sea freight with 100% insurance coverage. Factory Direct Sales: Competitive pricing from manufacturer with over 20% R&D staff and advanced production equipment. Flexible MOQ: Minimum Order Quantity is 1 piece, allowing for small batch testing and procurement. Diverse Specifications: Available in 2 to 6 flutes, various shank diameters (4mm-20mm), and multiple helix angles.