The innovative eraser MONO zero is available with two differently formed tips for precise erasing: Round tip in 2.3mm diameter and rectangular tip in 2.5x5mm. It is an essential utensil for all professional or recreational use that requires pinpoint erasing. The MONO zero has a push mechanism with metal lead. It is easily refillable. Plastic parts made of over 80% recycled material.. . Awarded with the iF product design award 2010 and the red dot design award 2010.