It would be helpful to include some direction on how best to use the labels. I've found that they work well on my porcelain dishes if I label the dishes with industrial strength Sharpie marker, then cover the marker with the heat-resistant labels. It is important to try to apply the labels without any wrinkles if you intend to autoclave or wet wash the dishes, though I have found that they still hold up pretty well. They give you so many that replacing one if needed won't be an issue. Overall, a great product for labeling dishes that are used at high temperatures.