The Convex and Concave Lens Set is a must-have for anyone interested in optics and photography. This set includes lenses made from glass, ensuring exceptional image. The combination of convex and concave lenses allows for use, making it versatile for various application. Whether you're using it with a telescope or camera, this lens set will enhance your observation and photography experience. Its compact design and easy interchangeability make it convenient to carry and use. Features -Color:Transparent -Material:Glass -Size:5.00X5.00X0.10cm/1.97X1.97X0.04in -Size:8.00X3.00X3.00cm/3.14X1.18X1.18in -Focus:10mm -Combination of convex, concave lenses for versatile use in various optical devices. -The physical optical lens is made of glass to ensure exceptional image clarity. -Enhances the observation and photography experience with telescopes and cameras. -Convenient design allows for easy interchangeability to meet different needs. -Provides clear vision for outdoor and bird watching, making it a must-have accessory for nature enthusiasts. Package list: 6 x Optical Lens