uni-ball Gel uni-ball Impact RT Retractable Pen Refills， Bold Point， Black Ink， Pack of 2， 6 Packs<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"> Gel ink is fade-proof and water-resistant </span></li><li><span class="a-list-item"> Acid-free for long-term archival storage </span></li><li><span class="a-list-item"> uni-ball® ensures premium quality performance with every refill </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/417xZiBHPnL.jpg" noproxy>