Las minas para portaminas son resistentes a la rotura por ser polimerizadas . Son de fácil recarga.
Minas Grafite Super Polymer 0.35mm - Provoca Arte - material de arte
Pentel Super Hi-Polymer Lead Refill 0.7Mm, Hb, 36 Pieces Of Lead (L50Bp3Hb-K6) - Imported Products from USA - iBhejo
MINAS FABER 05 H SUPER POLYMER : Office Products
Minas FABER Grafite 9067 0,7 Mm Hb (12 Un)
FABER-CASTELL SUPER-POLYMER FINE LEADS - Artemiranda
FaberCastell Super Polymer Lead 0.5 2Pcs in a pack
1pc Staedtler 250 Mechanical Pencil Lead Super Fine Anti-cracking 0.3/0.5/ 0.7/0.9/1.3 2H/
Pentel Super Hi-Polymer Leads .7mm
Super-Polymer fineline lead, HB, 0.7 mm
Pentel Super Hi-Polymer Leads, 0.7 mm, HB, Medium, Black, 12 Tubes of Lead (50-HB)
Pentel Super Hi-Polymer HB Lead Refill - 0.7mm, Pack of 36 : : Home & Kitchen
Faber-Castell 0.7mm HB Super-Polymer Fineline Lead (Pack of 12) : Artists Pencils : Office Products
Tubo de minas Faber-Castell Super Polymer de 0,7 mm HB - El Compas
Faber-Castell Super-Polymer, Minas de portaminas, mina HB de 0,7 mm - Portaminas Kalamazoo