Alvin Constant 2mm pencil lead available in a variety of lead weights. 2mm graphite drawing lead is used to fill lead holder pencils, drafting leadholders, refillable pencils, artists pencils, refill drawing pencils. Top-grade imported 2mm refill drawing leads are superior in both quality and strength. Uniform in texture and time-tested under rigid standards. Great for both paper and vellum. Available in weights from 2B (soft) to 6H (hard). Can be used with most any standard lead holder. Quality Alvin 2mm drawing leads available in packs of 3, 12, and 144. Alvin Constant 2mm pencil lead, drawing leads.