FP PostBase Vision High-Capacity Ink CartridgeBasic Specs for the FP PostBase Vision High Capacity Ink Cartridge Set Postbase Vision High Capacity Ink Cartridge Set direct from the manufacturer. Yields a maximum of 12,000 impressions per set. Actual yield will depend on usage and impression practices. Works with any FP PostBase Vision postage machines Guaranteed genuine and brand new FP ink cartridges, straight from the FP warehouse