1PCS M48mm‑M54mm Adapter Ring Aluminium Alloy Black Astronomical Telescope Accessory

Feature： 1. Aluminum alloy material, precision technology, sturdy and durable, corrosion resistant. 2. Convenient to install, flexible to use, compact and portable. 3. Inner wall with extinction treatment to avoid radiating light affecting image. 4. Fine workmanship, practical astronomical telescope accessory. 5. Professional manufacturing, stable characteristics and high reliability. Specification： Condition： 100percent Brand New Item Type： M48-M54 Adapter Ring Material： Alloy Color： Black Quantity： 1PCS Weight： Approx. 14g External Screw Thread： M48*0.75mm M54*0.75mm. Package List： 1 x Astronomical Telescope Adapter Ring