Item No.Size of NibPen sizeCapacityFM2043mm136*14mm5mlFM4505mm137*17mm10mlFB6016.5mm138*18mm10mlFM4088mm124*20mm10mlFM45810mm128*24mm15mlFM46015mm158*28mm30mlFM48030mm1*30mm30mlOnly suit for Non-corrosive liquid.