8 PK DR400 DR500 DR510 Drum unitCompatible with Brother LaserJet PrintersCompatible BrandBrotherTypePremium Compatible Drum Unit(Not OEM)ColorBlackPage Yield25,000 Pages at 5% Coverage (4A Paper)Print Technology LaserWarranty 12 monthsShelf Life3 years▲ Provide the same performance and reliability as genuine Cartridges.▲ Meeting standards of ISO 9001&14001 with premium sub-assemblies.▲ High-quality printing with every document.▲ Easy installation and never hurt your printer. ▲ 100% customer satisfaction within 90 days.▲Experience seamless printing with professional after-sales service and comprehensive quality assurance. ▲ Package Include:8x DR500 Drum UnitCompatible for Printers Listed HL-5070NHL-5070NLTHL-8420