UNI-BALL ONE 3 0.5MM

Uni-ball One 3 Refill 0.5MM features premium pigment-based gel ink in black, red, and blue housed in a single, compact refill cartridge. Engineered with Uni's proprietary pigment ink technology, this refill delivers crisp, vibrant lines that resist bleeding and feathering on paper. The fine 0.5 mm tip provides smooth, controlled writing for detailed work and everyday use. Designed for compatibility with the Uni-ball One 3 multi-pen system, this refill works seamlessly with the innovative twist-action color selector mechanism. Stock multiple refills to keep your multi-pen ready for writing, sketching, or note-taking whenever you need quick color changes without fumbling with buttons.