OTR.265 ACRYLIC MARKER is a professional artist tool for drawings and paintings on any surface. The nib for this marker is 4mm. The OTR acrylic paint is brilliant and will not break even on moving grounds like canvas, plastic bags or shoes. It s not necessary to mix the paint with other liquids or to have some other tricks to make it work! Just open it, shake it well and get creative. The OTR.265 is a valve marker, made in Germany, that is available in 22 colors. With the plastic contour tip you can paint opaque finelines over meters and meters with out to activate the valve again. Opaque, water based acrylic paint, non toxic and acid free. Odorless, lightfast, abrasion proof, xylene free, lead free and waterproof when dry. Will bond permanently on canvas, paper, metal, wood, terracotta, poster board, plaster and on porous materials.