Fresnel Lens Large, 300x300mm, Focal Length 300mm, Acrylic Lens (not Glass),Olar Death ray for Physics Classroom,Magnifiying Sheet Fire Starter for

Fresnel Lens Large, 300x300mm, Focal Length 300mm, Acrylic Lens (not Glass),Olar Death ray for Physics Classroom,Magnifiying Sheet Fire Starter for

1PCS-Pack 11.81x11.81 inches Fresnel Lens Focal Length:11.81 inches（300mm), Thickness:2mm, Material: PMMA (Acrylic) High Light Transmittance, High Efficiency in Focusing, High Precision. Great for Physics Classroom Education, Solar Heating Experiment, DIY Solar Project, Magnifying, Scientific Research Six Seasons is a Professional Manufacturer of Fresnel Lens and Optical Lens, If you have size customization needs, welcome to leave a message to us Tips: Wear sunglasses when using, so that the light is not too strong to damage the eyes, When using in the sun, keep away from the body to avoid burns 1PCS-Pack 11.81x11.81 inches Fresnel Lens Focal Length:11.81 inches, Thickness:2mm, Material: PMMA (Acrylic)