Each Pitt Artist Pen has the size indicated on the pen.  You will find this detail on the end of the cap and at the end of the pen barrel.

B, SB, M, F, S, XS, SC, C, 1.5


B = Brush 

1 to 5mm

60 colors - See Color Chart



SB = Soft Brush 

0.5 to 5mm

Black #199
Dark Indigo #157 Light Indigo #220 Warm Grey V #274 Warm Grey IV #273 Warm Grey III #272
Warm Grey I #270 Cold Grey I #230 Cold Grey III #232 Cold Grey IV #233 Cold Grey VI #235



M = Medium 

0.7mm

Black #199 Dark Sepia #175 Sanguine #188



F = Fine 

0.5mm

Black #199 Dark Sepia #175 Sanguine #188



S = Superfine 

0.3mm

Black #199 Orange Glaze #113 Deep Scarlet Red #219
Magenta #133
Middle Purple Pink #125
Indanthrene Blue #247
Phthalo Blue #110
Cobalt Green #156
May Green #170
Sanguine #188
Dark Sepia #175



XS = Extra Superfine 

0.1mm

Black #199



SC = Soft Chisel 

1 to 3mm

Black # 199



1.5 = Bullet

1.5mm

Black #199

Metallic Colors

Silver #251 Gold #250 Ruby #290 Blue #292 Green #294



C = Calligraphy

2.5mm 

Black #199 Walnut Brown #177 Magenta #133

*Some Creative Studio Packages may call #177 Sepia and #133 Cranberry