High-Capacity Ink Cartridge Set for PostBase Mailing System. (2-Cartridges) Provides up to 18,000 impressions, depending on PostBase model, applications, and usage. Compatible with all PostBase models 20, 30, 45, 65 & 85. Full 1-Year Replacement Warranty & No Expiration. Manufactured by Colorlabs for FP Francotyp-Postalia. New OEM item # 58.0052.3028.00