Sony Alpha Circular PL Filter for DSLR Lens Diameter 49mm<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"> Diameter (Approx.) --- M49 x 0.75 (screw diameter) </span></li><li><span class="a-list-item"> Material --- Aluminum， Glass </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/417jhbjjq5L.jpg" noproxy>