7-Piece Set 4-Flute Carbide Drills for Ceramic Cast Iron and Concrete - Hex Shank Dry Drilling Tools.

Hex Shank SystemFeaturing a hex shank system, these drill bits offer secure attachment to drill drivers, enhancing stability during use.7-Piece SetThis 7-piece set(3mm-4mm-5mm-6mm-8mm-10mm-12mm) , catering to various drilling needs in ceramic, cast iron, and concrete.High Speed Steel MaterialCrafted from high-speed steel, these drill bits ensure durability and longevity for efficient masonry drilling.4-Flute DesignThe 4-flute design of these drill bits promotes smooth cutting and reduces vibration for precision work.TiLing CoatingCoated with TiLing, these drill bits resist wear and tear, ensuring optimal performance in tough materials.