1-Pack Fresnel Lens 520*520MM Focal Length 620mm large magnifying lens solar fresnel for solar collecting, solar concentrator, cooking outside, emergency fire starter, education, DIY Project Magnifier
$179.001PCS large fresnel lens, acrylic ultra thin
High light transmittance, Hihh efficiency in focusing
Visual Aid for education – Great for DIY Solar Cooking, DIY Solar Heater, and DIY PROJECTION TV, For Scientific Research
Also be suitable for Solar energy collector system, start a fire under sunlight, hot water heater, solar furnace, LCD projector
Super fire starter