Machined with granite as advertised. Perfect for us laypeople who need a tool once or twice and don't want to waste keg and keg on it. Just make sure you start drilling at an angle, take your time and don't overheat. I used plumber's putty to make a ring around the bit while drilling and fill it with water to keep the bit from overheating while drilling. The hole on the gaanite for installing a cotton ball kitchen faucet is the price of the kit.
Not bad at all. I cut ceramic tiles like butter. I know it's not very impressive since it's only ceramic. But he performed cleanly; without chips. I cut through the marble countertop with relative ease. I've used a water trap to keep the saw cool and it seems to wear it out just as well. Cons: Some of them had more hits (jiggles) than I expected. Handyman. I don't expect them to last very long; However, I didn't pay enough to be a problem for me.
Works very well. However, I broke one. I pushed too hard and part of the bit detached from the hole saw part of the largest. Therefore, exert less pressure when drilling. It cuts very well through porcelain stoneware. I kept sprinkling it with water to keep it cool so you gotta do that with them. If you try to make it dry you will be in trouble. Also use a drill, which is pretty fast. I used a corded drill instead of a cordless Dewalt to make sure it spins faster and is stable. (Not part of the