1.38" Diamond Hole Saw with Drill Guide and Water Cooling System

Tool worked great. Exactly as it was suppose to. Couldn’t be happier.

I got one of these from my local hardware shop. It was significantly cheaper (one third) than the price that was on Amazon at the time. Either way the cost for this thing is a fraction of that of other coring bits and for my one time use this was plenty good. I'm sure it will be fine for more uses but that's all I personally needed.I used it on our granite counter top to drill a new hole for our water filtration system. I found it to be a great buy. I didn't need an adapter to use my drill instead of using a grinder. Many of the others are made for grinders and I wasn't about to buy one just for this job. Also the guide and water reservoir was rather convenient. Most folks use lots of tape or putty to build a reservoir. The guide helps make sure you're cutting where you want to be which is rather important when you're doing work on expensive counter top.If I had a criticism, I'd both note that 1) the seal that holds the water in and the guide in place does come loose after some drilling and 2) the bit is not long enough for very thick granite of course this isn't important if you're the 90% of us with standard granite thickness.

Bought this at Home Depot for $20. Used it to drill two holes in a granite composite sink. It comes with 6 double-stick adhesive pads. I only had to use one for both holes since it was still sticky enough after drilling the first hole. I filled the drill guide with water, inserted the hole saw, and drilled the hole in less than a minute. I am extremely happy with this saw. It drilled very smooth holes with no chips or burrs. I highly recommend this product.

Works well, all about water cooling and making your angle cut into the porcelain tile then moving cutter perpendicular to tile ad finishing your cut.Also laid my tile in cat box with water, so tile was covered in water.Make sure your grounded or cordless drill.