This is the drill i use. It really is only good for 1/4" holes in masonry . Anything more than that go for an SDS drill. This drill spins at the perfect speed for penetrating hardned stainless and will meet your needs for any type of high speed drilling. I always have this drill on my truck . It id prone to overheat though if you bog it down at high speed so allow the bit to cut and the motor to spin.