Amazon.com: Black Toner Refill Kit w/chip compatible with Samsung ML-1640 : Office Products
Samsung Ml-1610 Toner Refill Powder Toner Refil Powder Extra Dark Black Suitable for All Samsung 1610.1666,1676.4321,4521,1640 Laser Toner Printers : Amazon.in: Computers & Accessories
Samsung ML-1640 ML-2240 MLT-D108S 4 Pack Toner Refill With Chip – Laser Tek Services
GraceMate Black Refill Toner Cartridge Powder for SAMSUNG MLT-D108S D108S 108S 108 for ML-1640 2240 2241 1641 1642 Toner Refill _ - AliExpress Mobile
How to Refill toner cartridge for Samsung ML 1640 laser printer - YouTube