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K10 Grade 0.4mm V6 Type Tungsten Carbide 3D Nozzles for 1.75mm Filament. Ultra Wear Resistance: Wears up to 100 times longer than steel in abrasion, erosion, and galling conditions. High Thermal Conductivity: Twice that of tool steel, enabling faster printing speeds and optimized flow. Wide Material Compatibility: Workable for all filament materials including highly abrasive ones. Multiple Nozzle Sizes: Available in 0.25mm, 0.30mm, 0.40mm, 0.50mm, 0.60mm, 0.80mm, and 1.00mm. High Hardness: Hardness ranges from 6.0 to 8.5 on the Mohs scale. Low Friction Coefficient: Exhibits low dry coefficient of friction compared to steels for stable extrusion.