Model Compatibility: Fits Nortisu QSS 29, QSS 30, QSS 32, QSS 34, and QSS 37 series printers as a functional replacement for the gear ejection roller component. Part Number Match: Replaces A058598 and A058598-01 gear ejection roller components used in specified Nortisu QSS series models. Functional Design: Restores gear ejection roller function in Nortisu QSS 29/30/32/34/37 series printers without altering design or. Configuration: Includes 4 pieces of the O12T gear ejection roller to match the quantity and specification referenced in the part designation. Installation Purpose: Designed for direct replacement of worn or damaged gear ejection rollers in compatible Nortisu QSS series printer models.