The Tombow Mono Zero refillable eraser pen is one of the most innovative stationary design. The outlook of it can fool nearly everyone who has seen it for the very first time. It is available in two different tip shape, i.e. round tip in 2.3 mm diameter and rectangular tip in 2.5 X 5mm. It is designed for all professional use requiring pinpoint erasing with precision. In addition, it has a push mechanism with metal lead. Another fantastic feature is that it is fully refillable. It is highly environmentally friendly too with a recycling ratio approx. 90%. It is perfect choices for professionals, such as architects, designers, illustrators and cartoonists etc.