1、WIDELY APPLICABLE: Used for operations on concrete, masonry, stone, gypsum, etc. The 6 spiral optimizes the removal of drilling chips. 2、EXCELLENT PERFORMANCE: Impact drill bit has a 6 flute self centering cemented carbide tip, which ensures fast cutting speed and longest service life. Good comprehensive mechanical properties, good low temperature impact toughness, and good cutting performance. 3、EXTENDING SERVICE LIFE: Our optimized design of concrete drill bits allows materials to quickly exit the hole while keeping the concrete hammer drill bit cool. 4、FINE WORKMANSHIP: Well crafted with fine, clear and smoothly grooves, this drill bit has a standard size and ensure a tight fit with your equipments. 5、EASY CARRYING: With a special protective case, the drill bit can be well stored and carried in your bag for convenient use, the thread is not easy to be damaged, ensuring long term stable use.