5x Uni-ball UMR Refills Signo Gel Pen 0.28 0.38 0.7 0.5mm Uni Black Blue Red UNI
5x Uni-ball SIGNO UMR Refills. Ball tip - for Uni-ball Signo UMN pens. by UNI PEN CO.LTD. Avalible in BLUE, BLACK, and RED. Made in Japan! Use this refill in the pens listed under Compatible Products.