Titanium Coated HSS Drill Bit Set 8pcs 3 to 10mm Hex Shank Serrated for Metal Wo

Material High Speed Steel (HSS). Shank Type Hex. Heat Dissipation and Anti-Deflection: The fully ground spiral flute effectively reduces friction and heat buildup, while the straight shank design provides excellent grip and prevents starting deflection, ensuring a cool, efficient, and precise drilling experience.

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