CIVG 10pcs Concrete Drill Bit Set 5mm Alloy Masonry Drill Bit Set Stable Carbide Tipped Tile Drill Bit Cross Head 1/4 Hex Shank Drilling Hole Bit for Concrete Cement Brick Wood

The concrete drill bit is made of alloy and the reinforced head is made of carbide, which can prevent the bit from cracking and prolong using service. The drill bit is harder and longer, and the alloy cross head is more accurate to positioning. [Rust-Proof and Fast Drilling] The drill bit surface is coated with electrophoretic paint to prevent rust. It has U-shaped groove, quick to drill holes and dust removal. The 1/4 hex shank can keep drill bit tight and stable in the electric drill. [Stable to Drill] Before drilling, position the drill by leaving a slight indent in the tip of the drill. It has small cut resistance, stable drilling, neat and smooth opening, no broken edge, no tremor, and easy to chip. [Widely Uses] This product is suitable for concrete, cement, brick, wood, plastic and more. It fits for powder drills, hand drills, bench drills, but not for impact drills. A good tool for general home use and industry projects. [After-sales] If you have any questions, please get in touch with us, our service team will provide you with a professional and satisfactory service.