Pentel Lead Refills 0.5mm 4B, Black, 12 Leads per Tube (C505-4B) - Pack of 3 Super Hi-Polymer Lead 0.5mm lead produces fine lines 2B lead is a "soft" lead that creates a dark line density, is easy to read and feels very smooth 5 x 2.4 x 0.4 inches Super SAVE with Pack of 3