4PK ECOMAX NEW TN-660 TN660 COMPATIBLE BLACK HIGH YIELD TONER CARTRIDGE FOR BROTHER DCP-L2520DW, HL-L2380DW, HL-L2360DW, HLL-2320D, MFC-L2720DW, MFCL-2740DW 4PK TN-660 TN660 NEW COMPATIBLE HIGH YIELD TONER CARTRIDGE BLACK TONER CARTIDGE, YIELD UP TO 2,600 PAGES @5% COVERAGE REPLACEMENT FOR BROTHER TN660 TN-660 TN630 TN-630 FOR USE WITH : DCP-L2520DW, HL-L2380DW, HL-L2360DW, HL-2320D, MFC-L2720DW, MFCL-2740DW SOLD BY ECOMAX ONLY