This 3x Achromatic Multi Coated Barlow comes in a sleek black metal body package. The two-element optics are fully multi-coated, and the edges of the lenses are blackened to cut down on internal reflections. The 1.25” barrel will fit in standard 1.25” focusers and diagonals, and the Barlow will accept 1.25” eyepieces.
A metal thumbscrew locks the eyepiece firmly in place.
Tele-Extended Photography:  Use the T-Adapter with Barlow to get triple the magnification of prime focus mode. 
T-threads accept camera brand specific T-Ring (sold separately)