Pentel Ain Polysheath Pencil Lead Refills - 0.5mm HB #2 Graphite for Mechanical Pencils - Smooth Writing for School, Office & Sketching

Ain's replacement leads are balanced, high-quality, and high-performance. Their new manufacturing method also makes them even smoother. In addition, the casing features a satisfying sliding mechanism that allows easy access to lead.  

Note: The amount of lead contained in each case is as follows:

0.2mm: ~20

0.3mm: ~25

0.4mm: ~30

0.5mm: ~40

0.7mm: ~40

0.9mm: ~36

1.3mm: ~10