Amazon.co.uk:Customer reviews: Acrylic Paint Pens, 12 Colours Permanent Reversible Fine tip Art Marker Set Incl. Tweezers for Rock Painting, Ceramic, Wood, Canvas, Glass Painting, Mug Design, Ideal for DIY Arts & Crafts Projects
the color pen is very smooth and colorful，when you press on it，you see the fluid coming out and you can draw，i bought it for DIY mug as little present for kids ，they were so happy got the little present LOL
I bought these for my granddaughter to use at my house as she enjoys arts and crafts. She is 10 years old. All I know she has used them for is for painting a glass and a hard boiled egg, adult supervision both times. I don't know is K has painted anything else with them, because a week after seeing my granddaughter using these at my house,( school uniform still clean!), my daughter asked to borrow them to be used for the egg. They are still borrowed! K loved all the colours in the pack and found them as easy to use as felt tip pens. I definitely would recommend them for older children and grandparents, and am beginning to think that I may need to buy some more to keep in my house.
Seem well made and the ink is lasting. Set includes a plastic tweezer to reverse the nibs from blunt tip to angled point. Reversing the nibs before use can be done without the need for the tweezer, by simply pulling out the nib.