Features: The Board- Guiding Mirror -Pigeon Tail Plate is a must-have accessory for any astronomy enthusiast-. Made- of durable aluminum alloy, this guiding mirror provides stable and accurate tracking- for your telescope. Whether you are an amateur- or a professional astronomer, this accessory is perfect for anyone looking to improve their astrophotography skills. Take your telescope to the next- level with the Guiding Mirror -Pigeon Tail Plate, ideal- for use in dark- sky- locations. With its easy installation and compatibility with most telescopes, this guiding mirror is a versatile and indispensable tool for any stargazing- adventure. Specifications: Material: aluminum-alloy Type: 355/250/0559(optional) Package Includes: 1xDovetail Bar note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.