The POSCA PC-3M Paint  Markers are made using a non-toxic, water-based formula that produces dense, vibrant colours on a variety of surfaces. The markers are permanent on most porous surfaces and are removable on glass. -The markers have a fine bullet tip that measures 1.3 mm. -They are suitable for use on a variety of surfaces including paper, metal, glass, wood, and plastic. -The ink is vibrant, fade-resistant, and quick drying. -The markers are acid-free and non-toxic for your peace of mind. -These markers are the multi-purpose member of the POSCA range and are a favourite of both professionals and beginners. -This pack comes with 8 markers which includes the following colours: Dark Brown, Navy Blue, Dark Red, Fuchsia, Khaki Green, Slate Grey, Ivory and Red Wine.