Multiliner SP inking pens are pigment-based, and provide the highest quality for all your inking needs. Ink cartridges and replacement nibs are available so you never need to throw these durable aluminum bodied pens away. The waterproof, pigment-based ink will not bleed into COPIC markers. This 10-pen set includes all 10 sizes: 0.03mm, 0.05mm, 0.1mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.5mm, 0.7mm and a brush tip. Details:BlackIncludes assorted sizes (0.03mm to brush)10 pensPigment-based inkRefillable with SP refill cartridgesAluminum bodyWaterproof and archivalCompatible with Copic MarkersPhotocopy safe