This erecting eyepiece the image you see right-side-up. As you may know, Reflector Telescope use mirrors to collect light which means they usually project an "upside-down" image. When you are looking into space, this is insignificant because there is no upside-down in Space. However, if you want to use you telescope during the day to look at things here on Earth, you will probably want the image flipped back the . This eyepiece is compatible with any telescope or optical device that uses a standard 1.25 inch diameter eyepiece. Your image is inverted and magnified 1.5 times. Use Your Reflector Telescope For Daytime Viewing. Images Right-Side Up. Great Add-On For Telescope Beginners. Random appearance and color of screws, don't accept the specified color. Colour: black Material: plastic Size: 170x40x40mm Package Contents: 1 * Barlow Lens 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.