7Pcs Titanium Masonry Drill Bit Set 3Mm To 10Mm Concrete Drill Bit W Hex Shank

1. Made of quality carbide YG6X, the rust-resistant treatment and reinforced head prevent the drill from cracking and provide longer service life. The oxygen-nitriding treatment of the bit head improves the hardness of the bit2. Concrete Drill Bits are designed with a U-shaped chip discharge groove. This design ensures that all drill dust and chips are collected and released from the drill bit.3. This 1/4-inch hex shank drill bits can be used on power drill, hand drill and bench drill for drilling hole on glass, tile, wood, ceramic, brick, and more.4. When drilling hard material, please add water for cooling this masonry drill bit.