
Naseiko 6.35mm or 1/4 Inch Shank High Quality Custom Tungsten Rotary Carbide Burr. Premium Tungsten Carbide: Made from virgin tungsten carbide for optimal wear resistance and long-lasting durability. Innovative R Structure: Sandwich low-temperature silver soldering ensures a seamless bond, minimizing head fly-off risk. Double-Cut Efficiency: Faster material removal, reduced loading, and smoother surface finish with better control. High-Strength Shank: Unique high-nickel steel shank (42-45 HRC) is rust-resistant and prevents breakage in bends. Wide Application: Suitable for woodworking, engraving, polishing, and most small rotary tools (5000-60000rpm). Customizable Options: Product is explicitly marked as 'Customized', allowing for tailored specifications.