Large diameter: 35mmMaterial: Metal Sturdy and rugged Metal bracket holds the green pointer securely and fits right finder scope base on most telescopes. ​Lets you attach an Pointer to a telescope for use as an aiming device. Discover a wide selection of telescope must-haves, including various eyepieces, Barlow lenses to double your magnification, and moon filters for comfortable lunar viewing. Our team will provide 24-hour support to help you choose the right accessories and is always committed to ensuring your satisfaction with every product. ASIN B0GKZNZ331 Brand TYLQMY Focus Type Auto Focus Model Name TYLQMY Finderscope Reflex Manufacturer TYLQMY Model Number TYLQMY Number of Items 1 Objective Lens Diameter 1 millimeters Manufacturer Part Number TYLQMY Item Dimensions D x W x H 0.39 D x 0.39 W x 0.39 H