Click Pen Compatible Black Gel Pen Refill

Compatibility Designed to fit UMN-138/UMN-155/105/152 models, ensuring a perfect fit for your existing pen. Japanese Quality Produced by Mitsubishi Japan, known for its reliability and durability, this pen promises long-lasting performance. Versatile Sizes Available in 0.5mm and 0.38mm tip sizes, catering to various writing needs from fine detail to broad strokes. High-Quality Ink The UMR85N/83 ink is of high quality, ensuring smooth and consistent writing every time. Easy Replacement The pen features an easy-to-use cartridge system, making ink replacement quick and hassle-free.