All-purpose marker with durable chisel tip can be used for fine, medium or wide strokes. Premium, quick-drying, waterproof, nontoxic ink. For use on most surfaces, both porous and non-porous. Holds 4.5 grams of ink. BPA free. Marker Type: All-Purpose Permanent Markers; Color(s): Black; Tip Type: Chisel; Ink Types: Permanent.