The Drilax diamond-coated core drill is an excellent accessory for anyone who needs to create holes in tough materials. My analysis of this product showed that it is efficient in drilling smooth holes and has no trouble cutting through hard surfaces such as tiles, concrete, and marble. The durable diamond coating ensures longevity, so you get more value for your money. The only con is the price, which may be a bit steep for some users. Overall, I would highly recommend this core drill to anyone looking for a reliable and efficient drilling accessory.