Hi-Polymer Lead, 0.5 mm, Fine, H, 144/BX, Black PK, Pentel, Mfr#: PENC505HBX

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.