Description: This dovetail plate is designed for astronomical telescopes, offering a seamless transition from wide to narrow rails for enhanced compatibility with equatorial mounts. Its metal construction ensures durability and longevity, making it a reliable accessory for avid astronomers. The plate features a user-friendly design, including a reversible screw head and an M8 screw hole for additional counterweight, catering to various observational needs. Compact and easy to handle, it measures 8.07x4.02 inches, making it an choice for both amateur and professional astronomers seeking convenience and versatility in their setups. Size Chart: 20.5cmx10.2cm/8.07inchx4.02inch Package Includes: 1 Wide to narrow dovetail adapter plate Note: Please allow slightly errors due to manual measurement and different monitors.