Pentel Super Hi-Polymer Leads, 0.5 mm, 2B, 12 Leads Per Tube, Pack Of 3 Tubes Pentel mechanical pencil Super Hi-Polymer leads let you jot down crisp, clean messages that are easy to read. This lead refill works with most Pentel mechanical pencils and competitors for wide-ranging use at the office. Strong design guards against breaking under pressure. Prevents smearing and fading of your penciled drawings and documents. Produces dark imprints and crisp lines for easy reading. Super Hi-Polymer refills for your Pentel pencils. Contains 0.5 mm 2B leads. Pentel mechanical pencil Super Hi-Polymer leads let you jot down crisp, clean messages that are easy to read. This lead refill works with most Pentel mechanical pencils and competitors for wide-ranging use at the office. Strong design guards against breaking under pressure. Prevents smearing and fading of your penciled drawings and documents. Produces dark imprints and crisp lines for easy reading. Super Hi-Polymer refills for your Pentel pencils.