Toners for Brother TN 310, TN 315 Cyan cartridges. Page yield 3.5K.To change a starter cartridge TN 310 into a TN 315, simply change the gears.Compatible laser printers:TN310C (Low yield) and TN315C (High yield) - Brother HL-4150 Series, HL-4570 Series, MFC-9460CDN, MFC-9560CDW, MFC-9970CDW.