Feature: 1. Plossl Eyepiece structure, wide angle and long vision relief, providing more complete field of vision and comfortable viewing experience. 2. 25mm eyepiece, provide the wide field of vision, with additional clarity and long vision. 3. Full metal body, full surface multi-layer coating, high quality optical performance. 4. Standard 1.25 inch thread, easy to install and use. 5. Suitable for all of telescopes (31.7mm interface). Used for astronomical observations of the surface of the moon, planets, nebulae, star clusters, diffuse nebulae and other objects. Specification: Item type: 25mm Monocular Eyepiece Condition: 100% brand newMaterial: metalWeight: Approx. 94gColor: blackThread: Approx. 1.25in/31.7mmFocal length: 25mm long focal length, medium and low power eyepiece Coating: FMC full multilayer wideband coating, high definition, 2 sets of 4 multilayer adhesive lenses Applicable models: suitable for all off telescopes (31.7mm interface). Product Length: Approx. 71mm / 2.8in . Package List: 1 x Monocular Tube1 x Storage box