Speedy Inks - Compatible Okidata Replacement 6 Pack Black Printer Ribbon Cartridges - 52106001 for use in Okidata Microline 590， Okidata Microline 591<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"> For use in: Okidata Microline 590， Okidata Microline 591 </span></li><li><span class="a-list-item"> Page Yield: N/A </span></li><li><span class="a-list-item"> Shelf Life: 48 Months </span></li><li><span class="a-list-item"> Color: Black </span></li><li><span class="a-list-item"> The use of compatible replacement laser toner cartridges and supplies does not void your printer's warranty. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51N3LA-CUhL.jpg" noproxy>