1. This adapter allows the use of 0.965 eyepieces with telescopes that normally require 1.25 eyepieces2. Fits all types and brands of telescopes with a 1.25 focuser3. Requires additional back focus4. Requires additional back focusSpec:Features: This adapter allows the use of 0.965 eyepieces with telescopes that normally require 1.25 eyepiecesFits all types and brands of telescopes with a 1.25 focuserRequires additional back focusModel: 1.25 to 0.965 Mount AdapterSpecification:Color: blackMaterial: MetalWeight: Approx. 37gPackage List: 1 x Adapter ring