Unleash your imagination with these inking pens! Each pen cap is labeled by size so that you can easily organize your drawing pens. No Matter how you want to Draw,we have the right tip:0.2mm (005),0.25mm (01),0.3mm (02),0.35mm (03),0.40mm(04),0.45mm (05),0.50mm (06),0.6mm (08),1.0mm (10),2.0mm (20),3.0mm (30),BR.