Stabilo Ohpen Permanent Superfine Set Of 4<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"> 4 Ohpen set - permanent - superfine - .4mm tip - basic colors </span></li><li><span class="a-list-item"> Black shaft indicates permanent ink </span></li><li><span class="a-list-item"> Writes on almost all smooth surfaces </span></li><li><span class="a-list-item"> Used frequently for overhead projection </span></li><li><span class="a-list-item"> Non-slip grip zone and practical clip - cap-off time up to 3 days </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41LrJ3zf4qL.jpg" noproxy>