Premium-grade TN-3618 laser toner cartridge engineered for Brother DCP-L5510DN/DCP-L5660DN/MFC-L5710DN printers. High-purity polymerized toner delivers ultra-sharp 1200x1200 dpi resolution with zero smudging. Reinforced drum unit with anti-oxidation coating ensures 5,000-page yield at 5% coverage. Precision-molded ABS housing with dust-proof seals prevents leakage. Ideal for high-volume office printing, legal documents, and graphic-intensive marketing materials. Factory-direct pricing with bulk order discounts available. OEM-compatible performance without premium brand markup.