THEY ARE PRODUCED BY A DIFFERENT SUPPLIER THAN THE 'NON ECO' SERIES. 12 MONTH WARRANTY! Compatible printers: Samsung ML 1630, 1630W, SCX 4500W, 4500. ML-D1630 BLACK COMPACT ECO SERIES TONER FOR SAMSUNG ML1630, Scx 4500 ML-D1630 CAPACITY 2,000 PAGES.
eBay