The Schylling Focusing Extending Telescope 10X30MM 12291SP is a telescope with a maximum magnification of less than 20x and an aperture of 30mm. It is unmounted and manufactured in China by Schylling. The telescope is designed to extend and focus, allowing for a clearer view of distant objects. It's fully extended length is over 12 inches but under 18 inches. The material housing is a hard plastic, not cheap plastic, but not metal.