Specially designed for over painting - suited for painting over marks to cover them 
Alcohol-based pigment ink which is suited for temporary marking on metal surfaces
Line width: 3.0 mm
Ink is refillable - convenient, and more environmentally-friendly as barrel can be used repeatedly without having to buy new ones
Nib is refillable to all point size 
Waterproof and fade-resistant - long-lasting paint
Suited for industry use