OEM #: KYOCERA MITA :TK857K Description:TONER BLACK OEM Models: Kyocera Mita: TASK ALFA ( aka alpha) SERIES Description: TONER CARTRIDGE-OEM 100% ORIGINAL TONER FOR TASK ALPHA MODELS: TASK ALPHA 400Ci 500 Ci SERIES 400 Ci 500Ci TK-857 TK857K TK857 TK-857K 857K