The Visual Kit includes SVBONY 68 Degree Eyepieces 6/9/15/20 mm, 1.25 inch Laser Collimator, 1.25 inch Moon UHC CLS UV/IR Cut Filters Combination, and SV137 2x Barlow 1.25Inch FMC Internal Brass Ring with Perfect Matting Treatment. 

The SV213 1.25" 3xBarlow lens is an air-spaced, fully multi-coated 3-Element, apochromatic design.

The housing is precision machined from aluminum stock and black anodized to a hard finish.

The Barlow lens has a compression ring that doesn't leave any marks on cameras or eyepieces.

Each of the four elements in SV216 is fully multi-coated enhanced coatings, resulting in bright, sharp images. the lenses are edge-blackened to eliminate internal light scatter to maximize image contrast.

Provides excellent control of chromatic and spherical aberration, and a flatter field-of-view compared to standard barlows.

Comes in a beautiful Bolt Cases box. Includes one dust plug and one end cap.

SVBONY is our proprietary brand, will provide any protection. At this price is very reasonable, you use is very comfortable and at ease. If you need more power than your eyepieces alone can provide, we offer a new 2x Barlow lens to give a big magnification boost to any 1.25" eyepiece it's used with.

Svbony 1.25'' 2x barlow lens for standard 1.25'' telescopes, it has M42 thread, so it can connect with your camera, you just need an adapter, it's perfect!

Svbony SV118 1.25'' 2x achromatic metal barlow lens for astronomy telescope  

Svbony 1.25'' 2x barlow lens for astronomy telescope eyepiece, can effectively doubles the magnification of each eyepiece.

The SV136 3x Extender does not require a very long extension between the telescope and the eyepiece to directly increase by a factor of two. It is suitable for any 1.25 inch telescope.

• Fashion appearance;Different from the black that is common in the market;The silvery look makes the product look more stylish;The overall appearance is beautiful and upscale
  Brass compression ring design; A brass compression ring can protect your eyepiece from marring or scratching the barrel; Keeping your eyepiece in new looking
  Lens edges is blackened; The edge of the mirror is matted black; Reduce scattering of stray light and maximize contrast
  Non-slip rubber grip ring design; No slip prevent the barlow lens from falling off accidentally; Rubber grip ring for secure handling even in moist conditions
  Fully multi-coated lenses;The lens fully multi-coated provide a sharp view; Excellent optical performance with high contrast and high resolution