4 Inktoneram® Replacement toner cartridges for 128 128 3500B001AA Toner Cartridge imageCLASS D550 MF4412 MF4420n MF4450 MF4550 MF4550d MF4570dn MF4580dn<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> This package contains: 4 Inktoneram® Replacement toner cartridges to replace 128 ( 3500B001AA ) Toner cartridge. </span></li><li><span class="a-list-item"> To replace Cartridges with part numbers : 3500B001AA </span></li><li><span class="a-list-item"> Page Yield : 2，100 Pages / each cartridge at 5% coverage </span></li><li><span class="a-list-item"> Printer Compatibility: imageCLASS: D550 MF4412 MF4420n MF4450 MF4550 MF4550d MF4570dn MF4580dn </span></li><li><span class="a-list-item"> Warranty: Our Compatible Inktoneram® Replacement toner cartridges to replace 128 cartridges are manufactured under strict ISO-9001 standards. They are excellent economical alternatives to the high-cost OEM 128 toner cartridges. These cost-effective toner cartridges will provide high quality prints that meet OEM standards and are guaranteed against defect. Our compatible Replacement toner cartridges to replace 128 cartridges come with a 90 day 100% money back guarantee. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/5112Xyao64L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41rPaQZK%2BgL.jpg" noproxy>