Review on Kimax Pharma Graduating Cylinder Graduation by Richard Simmons

They come in a box of 6. I opened one up, washed it and it broke on first use. I like to use them to mix cocktails. I had a small amount of bourbon, sweet vermouth, and bitters. As soon as I put ice in the glass, I heard crackling. The crack was also visible. They must withstand the temperature shock of ice added to alcohol at room temperature. Also, they had a problem with printing. The numbers and graduations on the glass are a brownish color, not the bright white it should be.