Feature: 1. Specifications: The guide scope ring has a width of 14mm, a large contacting range, and better stability; The inner diameter of the ring is 60mm, supporting 40‑60mm diameter astronomical telescopes 2. Stable Structure: The connection between the guide ring and the base is flat (non curved), which avoids shaking after the guide ring is connected to the base, greatly improving the stability of the structure 3. Secure Screws: This set provides a 1/4 inch screw and three 15mm length M6 screws. The locking screws come with protective heads to prevent scratches during fixation, so you can use them with confidence 4. Aluminum Alloy: This telescope guiding ring is made of aluminum alloy all metal material, with a thickened design to ensure high strength, impact resistance, and greatly extend its service life 5. Compact Design: This guide scope ring has a compact size and lightweight design, which can be carried in a backpack or pocket. It can be taken out and installed before use, suitable for various scenarios Specification: Item Type: Guide Scope Ring Material: Aluminum Alloy Aperture Support Range: Approx. 40-60mm / 1.6-2.4in Inner Hole Diameter: Approx. 60mm / 2.4in Outer Frame Diameter: Approx. 69mm / 2.7in Frame Width: Approx. 14mm / 0.55in Color: Red. Package List: 1 x Guiding Ring 3 x M6 Screws 1 x 1/4 inch Screw