Las minas para portaminas son resistentes a la rotura por ser polimerizadas . Son de fácil recarga.
Pentel Super Hi-Polymer Lead, 0.3mm, HB, Box of 12 Tubes (300-HB)
Super-Polymer fineline lead, HB, 0.7 mm
0.7 mm : Pentel Super Hi-Polymer Potloodvulling - 0.7 mm
MINAS FABER-CASTELL 0,7MM HB X2 UND - Olímpica
Súper Hi-polymer?? Minas, 0,7 Mm, Medianas, Hb, 30
Faber-Castell 0.7mm HB Super-Polymer Fineline Lead (Pack of 12) : Artists Pencils : Office Products
Hi Polymer Pencil Lead 0.5/0.7mechanical Pencil Lead 2b Hb - China Pencil Lead, Minas
MINAS SUPER-POLYMER FABER-CASTELL 0,7 MM HB - Folder, Líder en papelería
Pentel Super Hi-Polymer Leads .7mm
Faber-Castell Super-Polymer, Minas de portaminas, mina HB de 0,7 mm - Portaminas Kalamazoo
Pentel Super Hi-Polymer Lead Refill 0.7mm Medium HB 12 Tubes Staedtler Eraser
Faber-Castell 0.7mm HB Super-Polymer Fineline Lead (Pack of 12) : Artists Pencils : Office Products