Model Number: XY230616 Material: Aluminum alloy What it does - Adjusts eyepiece location to help you obtain a sharper image Compatibility - Supports all types of telescopes, including reflector and refractor Applications - Suitable for observing star clusters, the Moon, planets, and other celestial bodies Use scenarios - Night sky observation: install the accessory and adjust the eyepiece position to maximize sharpness when switching eyepieces or magnifications while viewing star clusters and other celestial bodies - Lunar and planetary viewing: fine tune the eyepiece location to improve edge sharpness and surface detail at higher magnifications - Multi telescope or quick setup: universal compatibility allows you to adjust eyepiece position across different telescope types without reconfiguring the main components