Feature:1. Enhanced Width: Widened by 14mm, the guide scope ring provides increased and stable contacting, with an 80mm diameter supporting telescopes ranging from 60 to 80mm in diameter.2. Premium All Metal Design: Constructed with premium aluminum alloy material, the telescope guide scope ring is sturdy, stable, erosion resistant, and long lasting.3. Flat Interface Design: The finder scope ring's connection point with the base is flat (non curved), preventing any rocking after attachment to the base for stable and secure alignment.4. Secure Mounting: Equipped with 3 M6 screws, each 15mm long, all featuring protective rubber heads to prevent scratching or marking during fastening, ensuring a clean installation without leaving any traces.5. Compact and Portable: The guide scope ring is compact in size, making it convenient to carry in a backpack or pocket, allowing for easy retrieval and use upon setup.Specification:Item Type: Guide Scope RingMaterial: Aluminum AlloyHole Diameter Support Range: Approx. 60 to 80mm / 2.36 to 3.15inInner Hole Diameter: Approx. 80mm / 3.15inOuter Frame Diameter: Approx. 89mm / 3.50inFrame Width: Approx. 14mm / 0.55inFrame Thickness: Approx. 4.5mm / 0.18inColor: Red.Package List:1 x Guide Scope Ring3 x M6 Screws1 x 1/4 Inch Screw