Glass Cutting Disc 4-inch Ultra-Thin Diamond Saw Blade Cutting Disc 100x20x1.7mm 60-Girt Tiles Cutting Wheel for Angle Grinder Smooth Cutting Grinding of Glass Crystal, BlueFirst impressions: Nice sturdy glass cutting disc, bright blue in color. The disk has a hole in the middle, ready to install on your angle grinder.Installation/setup: Install on your angle grinder as directed in your angle grinder instructions.Final thoughts: I used this on my angle grinder and cut some glass tiles I had engraved with my laser to make some coasters to give to my son-in-law for his birthday. I did it slowly and carefully with a water bath. The tile decorations were designed to have one rounded corner and I used this blade to make the cuts. The set fits together in a leather holder I made for it and I think it turned out rather nicely. I like this and I’m glad I got it.⭐️1 star - I don't recommend it at all, poor quality.⭐️⭐️ 2 stars - I don't recommend it, it has multiple faults, or a very high price.⭐️⭐️⭐️ 3 stars - It's passable, It has some faults but the quality is ok for what it is.⭐️⭐️⭐️⭐️ 4 stars - Product quite acceptable, it does what it promises.⭐️⭐️⭐️⭐️⭐️ 5 stars - Product that I totally recommend.