POSCA Pens are a great choice of marker for versatility and quality and can be used to write or draw illustrations on almost any surface. This pack of 2 markers is perfect for eye-catching gold effects!This pack contains PC-1M and PC1-MR markers for fine and ultra-fine writing making it a great pack for intricate shining details on almost any art project.If used on porous surfaces such as paper, cardboard, stone, wood, silicone, fabric or unglazed ceramic, these pens are permanent.Smooth surfaces such as glass, glazed ceramics, PVC and smooth metal means your design will need fixing with a spray of water based varnish, apart from glass which should be put in a 160 degree oven for 45 minutes beforehand.Instructions on how to make permanent:- Terracotta - by baking at 220 degrees for 45 minutes, then spraying with clear varnish- Porcelain - by baking at 160 degrees for 45 minutes, then spraying with clear varnish- Glass - by baking in the oven at 160 degrees for 45 minutes then spraying with clear varnish- Textiles - by ironing on reverse- Metal, plastic and wood - by spraying with clear varnish. PC-1M - Extra fine tip. PC-1MR - Ultra fine tip. Water based. Write on almost any surface. Pack of 2