The barlow increases the magnification of any 2 inch or 1.25 inch eyepiece by two and a half times
Fully Multicoated Optics with 4-element lens system; hard-anodized aluminum barrel is threaded to accept 2 inch filters
2.5x Magnification with anodized Aluminum Housing; 2 inch Barrel Diameter; a 2 inch to 1.25 inch adapter is included; allows the use of both 2 inch and 1.25 inch eyepieces
Image erecting BAK4 prism with anti reflection coating; High accuracy and high light reflection prism; Internally matte blackened and threaded for no internal stray light reflection; 1.25 inch adapter with brass compression ring included
Entirely aluminum black anodized with smooth finish; if there is any problem of focusing due to the light path for a few telescopes; please feel free to contact us for help