Inktoneram Compatible Toner Cartridges & Drum Replacement for Okidata B4600 / B4550 / B4400 /B4500 B4400n B4600n B4500n B4550n 43501901 43502301 ([Drum,3-Toner], 4-Pack) This package contains: 4 Inktoneram Replacement toner cartridges to replace Okidata B4400 Toner Cartridges & Drum ( 3 43502301 Toner, 1 43501901 Drum ). (THIS IS A COMPATIBLE REPLACEMENT PRODUCT ONLY. THIS IS NON-OEM .) To replace Cartridges with part numbers : 43502301 43501901 Page Yield : 3,000 Pages / Toner and 25,000 Pages / Drum at 5% coverage Printer Compatibility: Okidata: B4400 B4400n B4600 B4600n B4500 B4500n B4550 B4550n Warranty: Our Compatible Inktoneram Replacement toner cartridges & drum to replace Okidata B4400 cartridges are manufactured under strict ISO-9001 standards. They are excellent economical alternatives to the high-cost OEM Okidata B4400. These cost-effective cartridges will provide high quality prints that meet OEM standards and are guaranteed against defect. Our compatible Replacement cartridges to replace Okidata B4400 cartridges come with a 90 day 100% money back guarantee.