Electric Breaker Hammer Bits, Standard Size Bushing Head 40Cr Steel Flower Hammer Drill Bit for Concrete Polishing, Chiseling Stone Walls

【40Cr Steel】Made of excellent 40Cr steel material, with good toughness, not easy to wear or deform after long term use. 【Square Head】Flower hammer drill square bushing head design, the pitch is sharp and even, with large contact area, stable and accurate in 【Standard Size】The electric flower hammer drill bit has a standard shank diameter and is stable in installation. 【Multiple Usages】This electric hammer drill bit is suitable for chiseling and finishing stone slabs, bridges, walls, concrete, cement roads, etc. 【High Efficiency】Use the bushing bit to polish and trim the concrete, with superior performance and high efficiency, and labor saving.