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