2-Pack Large Fresnel Lenses ?300mm(11.81") Focal Length 200mm Acrylic Magnifier for Solar Heating,Solar Cooking,Visual Education. (Focal Length 200mm) electronics3 the other is RJ9 connector

the other is RJ9 connector for telephones

Width: 3mm

and separated riders distance is 500 Meter

K1HY08YY0032

2-Pack Large Fresnel Lenses ?300mm(11.81") Focal Length 200mm Acrylic Magnifier for Solar Heating,Solar Cooking,Visual Education. (Focal Length 200mm) electronics3 the other is RJ9 connector2 Pack Large Fresnel Lenses ? 300mm(11. 81") Focal Length 200mm Acrylic Magnifier for Solar Heating,Solar Cooking,Visual Education. (Focal Length 200mm) Fresnel lenses are most used in solar concentration, solar heating and light gathering applications. Or cooking outside as a fire starter. Fresnel lenses can also be used as projection lenses or magnifiers. They are great for magnifying print in books, magazines, maps, telephone numbers, recipes, etc.