Review on 💎 Dremel Craftsman Diamond Gemstone by Tebery by Carlos Phillips

These drill bits are good for drilling through river rock and coastal rock. Some of them wear out quicker than others, which is what I would expect in rock drilling. But a few of my favorites get stronger after prolonged use. I am still using the first box after many hours of use. I will definitely buy them again. This is a great purchase at a great price!