Astronomy Telescope 0.965inch SR4mm Eyepiece Lens Application:Support all types of telescopes, reflector, refractor, to observe the star clusters, moon, , planets and other celestial bodies. 35 Degree Field of View:Wide viewing field with extra sharpness and long eye relief. Fully Coated:high quality optical glass for maximum brightness. Suitable for 0.965inch/24.5mm telescope eyepiece filters. Colour:Black+silver Material:Optical glass + metal Size:3.7x2.8 cm/1.46x1.10 inch Length:4 mm/0.15 inch Eyepiece Port:24.5 mm/0.965 inch Package Contents: 1 x Telescope Eyepiece Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.