Feature: 1. Full multilayer coating film high quality eyepiece, can zoom to any focal length between 8mm and 24mm, to select best magnification for shooting subject. 2. For viewing moon, planets, nebulae, star clusters and other heavenly body landscape and astronomy observation, high dispersion, wide field of view, very comfortable. 3. Fine workmanship, suitable for 1.25 inch /31.7mm astronomical telescope. 4. Zoom eyepiece not just eyepiece, high magnification to low magnification, short focal distance to telescopic, easy to adjust proportion, very practical. 5. Made of high quality aluminum alloy and optical glass material, sturdy, durable and long service life. Specification: Condition: Brand New Item Type: Eyepiece Material: Aluminum Alloy + Optical Glass Color: Black Quantity: 1PCS Focal Distance: 8-24mm Continuous Zoom Lens Coating Film: Wideband Green Film Weight: Approx. 168g Interface Size: Approx. 31.7mm/1.25inch. Package List: 1 x Eyepiece