Hi-Polymer Lead, 0.5 mm, HB, Fine, 30/TB, 36 Tubes/BX, BK PK, Pentel, Mfr#: PENC25BPHB3K6BX

Super Hi-Polymer Lead Refills produce crisp lines of consistent darkness, smoothness and density in mechanical pencils. Each super-strong lead writes as far as an entire wooden pencil and produces a dark line. A 12-piece tube is equivalent to 12 wooden pencils.