4 PACK Pentel Super Hi-Polymer Lead Refill .9mm Thick, H-15 Pcs Lead/Tube 50-9-H

4 TUBES PER ORDER: Pentel Super Hi-Polymer Leads are made of synthetic polymer, resin, graphite and carbon – a combination that gives remarkable strength and flexibility. Thick 0.9mm diameter size for bold marks and writing. For use in any 0.9mm mechanical pencil. One tube of 15 leads in H hardness

• Super Hi-Polymer Leads are designed for mechanical pencils
• Patented process offers greater lead strength; a darker line and minimal breakage
• H; Black