More on Amazon.com : http://www.amazon.com/gp/product/B00A2YFT00?tag=thefatkidin06-20 <br /> <br />Celestron 93436 Luminous 2-Inch 2.5x Barlow Lens (Silver) <br /> <br />The Celestron 25x Luminos Barlow increases the magnification of any 2 or 125 eyepiece by two and a half times <br />High-quality 4-element optics produce a flat field for sharp images that are free of extraneous color <br />Hard-anodized aluminum barrel is threaded to accept 2 filters <br />A brass compression ring holds eyepieces firmly in place and large thumbscrews are easy to turn even with gloves on <br />A 2 to 125 adapter is included Allows the use of both 2 and 125 eyepieces