BLACK ECO SERIES COMPATIBLE TONER B4200 FOR OKI B4100 B4200 B4250 B4300 B4350...
THEY ARE PRODUCED BY A DIFFERENT SUPPLIER THAN THE 'NON ECO' SERIES. 12 MONTH WARRANTY!Compatible Printers:Oki B 4100, 4200, 4250, 4250N, 4300, 4350, 4350N. 2 ORIGINAL BLACK PANASONIC DQ-TCB008 TONER FOR PANASONIC DP MB300JT DQ-TCB008XD.