Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worth the Money

Overall worked great for what I needed. I had to cut 4 holes in porcelain tile shower walls. I used a masonry bit for the first 2 holes which took about an hour a piece. The first hole took about 5 mins with this bit. The last hole was a bit slower, but so much easier than the other bit. Works as advertised. The water cooler/guide system helped to start the hole, but the cooling system didn't work well. I used a spray bottle. It was helpful to get the hole started though. Didn't stay on the wall well. I may be able to get a few more holes, but not sure, but worth the money for a diamond bit, only way to go with porcelain.