Pentel Super Hi-Polymer 0.5mm Lead Refill

Hi-Polymer is the standard lead in most Pentel pencils. The leads have a very high graphite content and are considered one of the best on the market.If you observe the leads under a microscope, you can actually see the sponge-like structure that makes the leads extra strong and ...Hi-Polymer is the standard lead in most Pentel pencils. The leads have a very high graphite content and are considered one of the best on the market.If you observe the leads under a microscope, you can actually see the sponge-like structure that makes the leads extra strong and resistant! The package contains 12 leads and is available in several different hardness grades.

The case is made of 100% recycled material.