Sharpie Magnum Permanent Marker 15.0mm Chisel Tip BlackDescriptionSpecificationsShipping This Sharpie Magnum Permanent Marker has an oversized tip which produces lines as wide as 15 mm. It is an industrial strength marker which can write on wet and oily surfaces making it perfect for a wide range of environments. It has an extra large ink supply which will last a long time. This marker has a 15 mm chisel nib. It is an industrial strength marker perfect for a range of environments. The water resistant ink