Features: Deliver 50% faster concrete penetration with U shaped flutes for efficient debris removal, suitable for most heavy duty rotary hammers. Hardened alloy construction provide longer life than standard steel bits, featuring shock resistant design for sustained drilling in masonry and reinforced concrete surfaces. Ideal for professional contractors, construction crews, and requiring in high frequency drilling operations across multiple job Perfect for creating clean holes in brick wall and stone surfaces during home renovations, commercial construction projects, or infrastructure maintenance work. Engineered with ground cutting edges and standardized square shank design for bit changes, ensuring uninterrupted workflow in demanding drilling application. Specifications: Component:Metal Size:9mm/10mm/12mm/14mm/16mm Package Includes: 1Pc Drill Bits note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.