<> BIG NIB - Extra broad magnum-sized nib ensures text is readable from great distances. DENSE COLOR - Produces dense, opaque lines, making text easily readable. ERASABLE - Erasble with dry or wet cloth or Artline magnetic whiteboard erasers. REFILLABLE - Refill ink available, increasing the product's life. LOW ODOR - Ink is xylene free, so there is little to no offensive odors or smells. SAFETY - RoHS compliant so you can feel confident that the product is safe from hazardous chemicals. .