- Multi-coated Optical Glass with anti-reflection coating
- Doubles focal length of lenses
- Manufacturers’ Lifetime Warranty
- Item Includes: Case, Protective Lens Cap, Nwv Direct Micro Fiber Cleaning Cloth
2x (Doubler) 4-element Teleconverter multiplies the focal length of any fine optic it’s used with by 2x, maintaining the resolution and contrast at a high level.