Celestron 93445 Ultima Duo Eyepiece， 1.25/2-Inch， 21mm (Black)<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"> High performance photo-visual eyepieces quickly switch between observing and imaging </span></li><li><span class="a-list-item"> Fully multi-coated optics with 8 elements in 5 groups for the best correction of chromatic aberration and field curvature </span></li><li><span class="a-list-item"> Extra wide 68-degree apparent field of view </span></li><li><span class="a-list-item"> Full 20 mm of eye relief </span></li><li><span class="a-list-item"> Integral 42 mm T-adapter threads and threaded barrel for filters </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31%2BUDXLgFdL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41lcnHaUxhL.jpg" noproxy>