Pentoink's refillable system means you're no longer limited by single-use pens. Designed with both the artist and the environment in mind, the brush pen features an easy-to-refill ink reservoir that reduces waste and saves you money over time. It's a smart investment for creators who want quality tools that last. https://substack.com/inbox/post/164217677?r=5r13n8&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true&triedRedirect=true