Review on Fast Drying Acrylic Paint Pens with Fine Tips - 12 Vivid Colors for Glass, Wood, Mugs, Rocks, Metal, and Clay by Jessica Moodley

I teach Sunday School classes 1-3. We used these pens in a rock carving project. They were really good in that they kept clutter to a minimum and had bright colors. The only downside I noticed was that one of the pens in the box broke when we shook the pens to release the colors. Don't worry about the kids, they just took the brush and didn't waste a single drop of paint. I would buy them again. UPDATE: Today I received a package from the seller that replaces broken drawing pencils. I was not expecting that! Excellent customer service! We used them in Sunday school today and they all worked. I would definitely buy from this seller again!