All the benefits of the standard eyepiece and handset tray but with the added feature of fast and safe base registration. No more struggling with the LX90 in the dark - simply bolt the Locator Tray to the top of the tripod with the three screws and key provided, and the LX90 just slots into place in the special recess, achieving perfect centering of the main tripod fixing bolt. Finished in durable black powder coating.