Haida 77mm Metal Adapter ring for 100 Series Filter Holder fits 77 Lens / Lenses<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"> 77mm Metal Adapter Ring for Haida 100 Series Filter Holder </span></li><li><span class="a-list-item"> Material: Aluminum </span></li><li><span class="a-list-item"> Front Thread: 86mm accommodates Haida 100 Series Round CPL </span></li><li><span class="a-list-item"> Rear Thread: 77mm </span></li><li><span class="a-list-item"> allows you to mount the Haida 100 Series HD2500 Filer Holder to lens with 77mm Filter Thread. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41CkMXb%2BwyL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41wSOg7j2RL.jpg" noproxy>