KAISERfusion Markers can be used on a variety of surfaces and are great for journaling, colouring and colour matching embellishments. They are alcohol based. One end is a chisel tip and the other is like a thick felt tip. They blend amazingly well on blending paper, metal, wood, lace, plastic, and glass. All up I have 155 colours. all have been tested are working. I have barely used them. Just not for me.