Zebra Ballpoint Pen Biotube CEK-0.7 Refill – 0.7 mm – Black – Set of 5

Introducing the Biotube Refill, an eco-revolution in the pen industry. These innovative pen refills are crafted from biomass plastic derived from sugarcane, setting new sustainability standards. Designed for the Biotube Gym Knock pen, each pack includes five refills. These water-resistant emulsion ink refills, available in .7mm tip size and red or black ink, not only provide a smooth and comfortable writing experience but also reduce CO2 emissions by an impressive 73% compared to conventional options. Choose the Biotube refills for an eco-conscious and efficient writing solution. Nib: 0.7 mm Ink color: Black