Sigma 105mm WR Ceramic Protector Filter<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"> Its outstanding protective capability is leading to high reliability. By combining much greater hardness than chemically strengthened glass and greater flexibility than sapphire crystal glass. </span></li><li><span class="a-list-item"> Clear glass ceramic is the ideal material for protective filters that achieve over 10 times the strength of a conventional protective filter. </span></li><li><span class="a-list-item"> Worlds first Clear Glass Ceramic Protective lens filter </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ORzM0Yo%2BL.jpg" noproxy>