Orion 5691 LaserMate Deluxe II Telescope Laser Collimator<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"> Want the best views possible from your reflector telescope? Perfectly align your reflector optics with our second-generation LaserMate Deluxe Collimator! </span></li><li><span class="a-list-item"> Convenient rear view port lets you easily collimate optics from the rear of the reflector telescope </span></li><li><span class="a-list-item"> Second-generation model features an improved aluminum housing with a wider， 3mm barrel flange to ensure proper seating for consistently pinpoint collimation with every use </span></li><li><span class="a-list-item"> Operates on one CR2032 battery (included) and comes with a full set of instructions with a step-by-step procedure on how to properly align a relfecting telescope </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41vbn%2BqNZoL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/7160LT8S-NS.png" noproxy>