Products bearing the AP seal of the Art & Creative Materials Institute, Inc. (ACMI) are certified non-toxic. A product can be certified non-toxic only if it contains no materials in sufficient quantities to be toxic or injurious to humans, or to cause acute or chronic health problems.
The Size 003 creates an extra-fine 0.15 mm line. The nib is extremely delicate and can be damaged by more than a light touch. Pressure beyond the weight of the pen may damage the nib and void the warranty.