Your B721 is printing light, the toner light's on, or you're low and don't want to wait a week. This is the black toner your B721 runs on. Genuine OKI, in stock, and ready to ship so you're not staring at a blank page mid-deadline
| brand | OKI |
| product_type | Black Toner Cartridge |
| compatible_model | B721 |
| colour | Black |
| category | Printing |
| subcategory | Ink Toner & Ribbons |
