Versatile Specifications: The Guide Scope Ring is designed with a 14mm width, providing a large contacting range for enhanced stability. It features an inner diameter of 60mm, making it compatible with astronomical telescopes ranging from 40mm to 60mm in diameter, ensuring a perfect fit for a variety of telescope models. Stable Structure: The connection between the guide ring and the base is flat, not curved, eliminating any risk of shaking once connected. This design greatly enhances the overall stability of your telescope setup, allowing for precise and accurate astronomical observations without the worry of misalignment. Secure and Scratch-Free Fastening: This set includes a 1/4 inch screw and three 15mm M6 screws, each equipped with protective heads. These locking screws prevent scratches and damage during installation, providing a secure and confident fit that maintains the integrity and appearance of your telescope equipment. Durable Aluminum Alloy Construction: Crafted from high-strength aluminum alloy, this Metal Telescope Guide Ring boasts a thickened design that ensures durability and impact resistance. Its robust all-metal construction significantly extends its service life, making it a reliable and long-lasting accessory for your astronomical pursuits. Compact and Portable Design: With its compact size and lightweight design, this guide scope ring is easy to carry in a backpack or pocket. Its portability allows for quick installation and use, making it a convenient accessory for both planned and spontaneous stargazing sessions in various settings. Enhance your telescope setup with this Astronomical Telescope Guide Ring, combining stability, durability, and portability. Its thoughtful design ensures a reliable and secure connection, making it an essential tool for both amateur and professional astronomers eager to explore the cosmos with clarity and precision.