The ALSKAR DIAMOND ADCSB bit I tested performed above and beyond my expectations .As a result of my tests, I determined that this cutting tool is one of the best options for concrete drilling in the Industrial and Scientific fields. The diamond coating on the bit makes for an effortless drilling experience while the durability ensures longevity. The only minor con to note is the slightly higher price point but the performance more than justifies the cost. Overall, I highly recommend this industrial drill bit to anyone in need of concrete cutting tools..