Check the listing for details. Telescope Barlow Lens, 1.25 Inch Telescope Accessory, Fully Multi Coated Broa.... Condition: New. Listed at 27.16 USD. More magnification for existing eyepieces to see the details of moon and bands of Jupiter clearly;the Barlow lens is a must Quality and value high power 5x Barlow lens to give a big magnification boost to any 1.25'' eyepiece It will help double the capacity of an existing set eyepieces at the cost of a single eyepiece;It's super easy to use;you can simply insert eyepiece of choice into the Barlow lens;then insert it into the scope Barlow lens could also provide more magnification without reducing the exit hole on the eyepiece Features: 5x magnification factor with 1.25" interface: 5 times magnify of any 1.25'' eyepiece Quality multi coated optical glass lens: High transmittance;ensure views clear and sharp Three element APO design: Offer high quality observation without introducing additional chromatic aberration Safety undercut and brass compression ring: Ensure eyepiece barrels will not be marred by the captive set screw Quality aluminum stock and black anodized body: Precision machined;sturdy for a long term use Shortly height 3.9" 100mm: Convenient to use and carry Dust cover: Keep lens clear easily Package Include: 1xBarlow lens 5x Pay Attention: The Barlow lens' role is not just to improve the image quality;it's also play an important role of viewing comfortable Even a well made Barlow will little damage on the imaging quality When the Barlow lens and eyepiece using together;if the magnification is over the biggest magnification;the Barlow lens observation effect appears nearly zero or imaging becomes blurred In order to reduce the influence of imaging;careful selection of Barlow lens at different magnification is very important The value must have 5x barlow lens doubles the magnification of any 1.25 inch eyepiece;double the capacity of an existing set eyepieces at the cost of a single eyepiece Quality aluminum stock and black anodized body 3 element 2 group lenses with multi coated optics design make image more crisp and sharp Qulity and shorty aluminum stock and black anodized body for a convenient long term use 2 element one group broadband green film multi coated optical glass;the housing is blackened to maximize image contrast