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Hi-Polymer refill leads from Pentel are a universally comaptible replacement lead that works with all mechanical pencils. Each pack contains 12 leads stored in a protective plastic case perfect for taking refills with you. Hi-Polymer leads have a special slow wear rate, making each lead last longer and hold their shape better. This HB grade lead gives you a balanced lead suitable to use on surfaces such as card and paper. - Brand: Pentel - Lead width: 0.9mm - Lead grade: HB - Tube of 12 leads - Universal refills - Slow wear rate