These high grade carbide inserts have come to our rescue and given us the edge we've been looking for. We've tried so many different inserts in the past, but none have performed as well as these. They're perfect for the tough jobs we throw at them, including stainless, aluminum, and cast-iron machining. Their strength and durability have been put to the test time and time again, with no signs of wear or tear. We've even had fellow machinists ask us where we got them, and we happily shared our secret. These inserts have become our go-to "carbide trio" and we wouldn't have it any other way. If you're looking to elevate your machining game, look no further than these high grade inserts.