Our double convex lenses are designed to provide crystal-clear magnification and a . These lenses are suitable for a variety of applications, including telescopes, bird watching, and stargazing. The lenses are easy to install, making them ideal for both skilled and DIY enthusiasts. With 12 pieces in each set, you have plenty of spares for replacements or multiple projects. Features -Color:Transparent -Material:Acrylic -Size:5.00X5.00X1.00cm/1.97X1.97X0.39in -Diameter: 50 mm - optics: crafted with double convex lenses, ensuring clarity and magnification for all your observational needs -Versatile applications: suitable for a variety of telescopes, making it ideal for stargazing, bird watching, and other observational activities -Easy replacement: designed for easy installation, allowing you to quickly replace or upgrade your existing lenses without any help -Diy friendly: suitable for various diy projects, providing flexibility and creativity for hobbyists and professionals alike - construction: made from acrylic materials, these lenses are built to last, offering longterm reliability and performance Package list: 12 x convex lenses