5Pcs Set Alloy Masonry Cement Drill Bits Concrete Drilling 4-10mm Tools Construction Impact Wall Punching Reaming Multi-purpose

[Features]: 1. High-quality carbide tip, special sharpening technology, small incision resistance, improve work efficiency. 2. Surface fine polishing, environmental protection process, environmentally friendly process polishing. 3. Universal round handle, suitable for electric drills, to make the use of a wider range. 4. Tungsten steel head, higher hardness. Spiral groove, fast chip removal. Cement buster, concrete, etc. 5. Suitable for drilling holes in masonry, cement, ceramic tile, brick, block, rock, stone, concrete, metal, plastic, wood, etc. [How to use]: It can be used on the hand drill (for impact gear) drilling tools or the electric hammer (with the conversion drill chuck). [Note]: Not applicable to reinforced concrete walls. [Package contains]: Specifications 4mm 5mm 6mm 8mm 10mm The total length 72mm 82mm 98mm 118mm 120mm Blade length 40mm 50mm 58mm 70mm 72mm