Refilling toner cartridges is actually easier than refilling ink cartridges. Toner cartridges can usually be refilled 2-3 times before the print quality starts to degrade. All toner cartridges are different so it's critical to have the right toner, tools and instructions for your cartridge. Our refill kits are NOT generic refill kits - the toner and instructions are designed specifically for your specific cartridge:

ML 2010PR BLACK Refill Kits: Each kit includes toner plus instructions needed to easily refill your SCX-4521D3 (Samsung-119s) cartridge Single Refill Kit-$19.95 This kit contains 95 grams of black toner powder (1 refill), one replacement fuse plus instructions. Double Refill Kit-$32.95 This kit contains 190 grams of black toner powder (2 refills), two replacement fuses plus instructions. Best Value

This bulk toner is NOT generic toner. It is manufactured to match the ML 2010PR toner, and is guaranteed to meet or exceed your current print quality. Order up to 10 bottles - Note: You will receive bottles of toner only - no refill tools or instructions.

1 Bottle - $13.49 2 Bottles - $25.903 Bottles - $37.774 Bottles - $49.105 Bottles - $59.896 Bottles - $70.147 Bottles - $79.858 Bottles - $89.029 Bottles - $97.6510 Bottles - $105.74 BLACK Toner - These Bottles each contain 95 grams of black toner and will provide one full refill for your SCX-4521D3.