InkOwl® - Refillable Cartridges for EPSON B-300, B-310N, B-500DN, B-510DN with filling funnels and instruction manual

This product contains 4 easy-to-refill cartridges for B-300, B-310, B-500, and B-510 printers. The transparent cartridges make it easy to see the ink level inside the printer. Please make sure you have a working (not empty) set of 4 original EPSON B-series cartridges before proceeding with this system. Cartridge numbers: T6161, T6162, T6163, T6164, T6171, T6172, T6173, T6174, T6181