Astromania 7.5mm T2 Extension Ring<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"> T2 interior thread and a T2 exterior thread for elegantly solving spacing problems in astrophotography </span></li><li><span class="a-list-item"> Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners. </span></li><li><span class="a-list-item"> All metal construction and anodizing aluminium process， durable for long time use. </span></li><li><span class="a-list-item"> This is a very high quality anodized extension ring. </span></li><li><span class="a-list-item"> The spacing required can be achieved by combining several extenders of differing lengths. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41WB1LhgP6L.jpg" noproxy>