Important Information Material:Metal Package Size: 12cm x 4.5cm x 4.5cm/4.72 x 1.77 x 1.77 (Approx.) Overview: Indisputable that this guide scope is easy to install on telescope to use for correcting position accurately and to help you to observe the astronomy and star. Comes with mini compact size which allow you take it easily to outside for using, and it is ultra light to use for long time without broken. By making with metal material, this guide scope is solid and wear-resistant. The length of the product is 12cm, the width is 4.5cm, the height is 4.5cm. It is suitable for install on telescope to observe star. Note: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Reminder: The product does not contain eyepieces and tracking drive devices. Specifications: Features: Dust-Proof, Adjustable, High Stability Caliber: 32mm Focal Length: 125mm Interface: 1.25/M42 Interface Package Content: 1 x Guide Scope 2 x Dust-Proof Covers 3 x Screws 1 x Dovetail Plate