Pentel Ain Stein Mechanical Pencil Refill (0.3 mm)

Enhance your writing and drawing experience with the Pentel Ain Stein Mechanical Pencil Refill. Available in HB, B, and 2B hardness, these 0.3mm mechanical pencil refills are perfect for detailed illustrations and precise note-taking. Built with reinforced silica frame technology, they deliver unmatched strength and smoothness. Compatible with all 0.3mm mechanical pencils.