1.25 Inch 2x Barlow Lens / Camera T Adapter for Telescope Eyepiece(Full black) - Accept Filters - Used for Astronomical Photography - Coated -------------------------------------------------------------------------------------A coated 2X barlow lens (Full black)1. Double the power of your arms! If you are looking for a compact high power barlow lens, particularly if you have a fast Newtonian telescope, this is a perfect opportunity.2. The 1.25" 2x Barlow is an excellent accessory that essentially doubles the power of any 1.25" eyepiece.The housing is blackened to maximize image contrast.The body is full black metal constructed and precisely CNC-machined.---------------------------------------------------------------------------------------A T- adapter for DSLR and mirrorless cameras1. The barlow can be used as an imaging adapter for your camera thus offering 1x and 2x imaging magnifications.2. The barlow also has a male T-thread on its back that can be used to attach a DSLR camera and other T-thread type accessories. 3. Accept 1.25inch filters. Just remove the optical glass part and add the filter on if need. Specifications: Barrel Size: 1.25 inch (31.7mm) Magnification Factor: 2x Type: T-adapter/ barlow lens Coatings: coated Weight: 3.03oz Height (Total): 65mmYou will receive: 1 X Barlow Lens^_^ Lifetime warranty: We have confident in our products and take full responsibility of the quality! ^_^