The Posca PCF-350 adds a useful brush nib tool to the fantastic POSCA range. This marker features an 8mm brush tip, ideal for all types of art. The opaque water-based pigment ink writes on any surface and won't bleed through paper. Gently pump the push-button to prime the ink into the brush nib. Initial use may be a little dry until the ink gets flowing. POSCA works on most surfaces and is permanent on absorbent media such as paper and card, and can be removed from shiny surfaces with a scraper. To make permanent: Paper/Card: No action needed - POSCA pigment will be absorbed into the fibres, making it permanent. Terracotta: Bake in the oven at 220°C for 45 minutes, then spray with clear varnish. Textiles: Iron on the reverse side. Porcelain: Bake in oven at 160°C for 45 minutes, optionally spray with clear varnish. Metal: Spray with clear varnish. Glass: Bake in oven at 160°C for 45 minutes, then spray with clear varnish. Wood: Spray with clear varnish. Plastic: Spray with clear varnish. This marker contains non-toxic water-based paint.