HOTCOLOR 36 High Yield 36XL Black Ink Cartridge (18C2170) for Lexmark x3650, x4650, x5650, x5650es, x6650, x6675, Z2420 Printer (2BK) 1.Contents: 2 Pack Hotcolor Remanufactured for Lexmark # 36 XL High Yield Black Print Cartridge (18C2170) 2.# 36XL 37XL Ink Cartridge work for Lexmark x3650 x4650 x5650 x5650es x6650 x6675 Z2420 Printer 3.Page Yield: 36XL Black 37XL Color Per Ink Cartridge Up to 500 Pages (at 5% coverage) 4. Type: HOTCOLOR (ISO 9001 certified facility) Remanufactured Ink Cartridge for Lexmark 36XL Black 37XL Tri-color Inkjet Cartridges LEX18C2249 18C2170 18C2180 ; Not made by Lexmark. 5.Guarantee: 120 days quality warranty.If there is any problem,DO NOT hesitate to contact us.