drawing pen art student painting architectural design special contour pen waterproof needle pen can add ink hook line marking pen

003 [mm]] 005 [0.2]] 01 [0.25]] 02 [0.3]] 03 [mm]] 04 [0.4]] 05 [mm]] 08 [0.5]] 1.0 [mm]] 1.2 [0.7mm]] 1 hard head [1.0]] 2 hard head [2.0]] 3 hard head [3.0mm]] b1 [extremely fine]] b2 [regular script]] b3 [medium regular script]] c1 [1.0]] c2 [2.0]] c3 [3.0mm]] br soft head [thick]] brf soft head [fine]] efb soft head [extremely fine]]

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