Ain Stein nib 0.3 mm Ain Stein is our strongest series of nibs for ballpoint pens. Behind the innocent exterior hides an impressive product optimization and a high-tech production process that takes its inspiration from nature: With a compressed, hexagonal structure, the same shape as a honeycomb, and with a ceramic frame that holds the pins together from the inside, the Ain Stein pins are both ultra-stable and flexible. The case contains 15 pins. It is made of 92% recycled material and is part of Recycology - Pentel's sustainability concept. 92% recycled material (case) Hardness: HB Case contains 15 pins Line width: 0.3 mm Certifications: RECYCOLOGY ( case ) + Eco Mark

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