Features: High performances 4 flute impacts hammer drill bit with 40CR alloy steel construction delivers 30% increased impacts force for efficient concrete drilling up to 16mm diameter. Features a special round shank design with enhanced wear resistant coating, ensuring extended durability through 1000+ concrete holes while maintaining sharpened cutting edges. Ideal for construction professional and DIYer enthusiasts requiring reliabled drilling solution for demanding electrical installations or plumbing projects. For drilling through reinforced concrete, brick wall, and masonry surfaces during renovation projects or professional building maintenance tasks. Compact 110mm length with included protective case ensures easy portability and organized tool storage for jobsite efficiency and long term bit preservation. Specifications: Component: alloy steel Size:Approx.150x6mm/5.9x0.23inch Size:Approx.110x6mm/4.33x0.23inch Size:Approx.150x8mm/5.9x0.31inch Size:Approx.150x10mm/5.9x0.39inch Size:Approx.150x12mm/5.9x0.47inch Size:Approx.150x14mm/5.9x0.55inch Technical parameters: Standard interfaces for adapting electric hammer | Wear-resistant life of 1000 holes Use scenarios: concrete punching | wall penetration | construction and other multi-mode switching Package Includes: 1pcs Drill Bit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.