The Nero D'Inferno Ink is for industrial leather dyeing, this is a 250ml bottle. Translating to "Hell Black" from Italian, the name gives an idea of the strength this ink has. A highly permanent ink, this product will stain most porous surfaces. Always wear protective equipment when handling this product. Apply by many methods, brush, marker, dabber or even spray. A highly versatile ink, it mixes with other paints and inks to combine powers or make other colours.