Uni Gel Ink Ballpoint Pen Refill 0.38mm 4 colors UMR-83 Uni Ball Signo

This refill is exclusively for the Uni-ball Signo RT UMN-103 and Uni-ball Signo 207 UMN-207-38. Uni-ball Signo RT UMN-103. Uni-ball Signo 207 UMN-207-38. Uni-ball Signo RT1 UMN-155N-38. Ink composition: Gel ink.

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