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Amazon.com: 2-Pack Fresnel Lens Φ240mm(9.45") Focal Length 300mm Acrylic Ultrathin Magnifier for Solar Heating,Solar Concentrator,fire Starter,spot Lens,Visual Education (Focal Length 300mm) : Arts, Crafts & Sewing
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650w 110mm Diameter Round Glass Spotlight Fresnel Lens With Ip23 Protection Grade 1pc - Lenses - AliExpress
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