1pcs Double Biconcave Lens | 75mm Diameter and 75mm Focal Length Plant Model Widely used in education for

Widely used in education for teaching simple qualitative analytical separations

Durable Design: The banana plugs are made of pure copper

Comes with an easy hang string attachment + 1x Dry Erase Pen with Eraser & 2 magnets

120mm (1 of each size)

In its formulation

1pcs Double Biconcave Lens | 75mm Diameter and 75mm Focal Length Plant Model Widely used in education forHigh Quality Glass: Made from durable and high quality glass, this Double Biconcave Lens is designed to last and provide accurate and reliable results in a variety of scientific applications. 75mm Diameter: With a diameter of 75mm, this lens is perfect for use in a range of optical experiments, including refraction, reflection, and more. 75mm Focal Length: Featuring a 75mm focal length, this lens is an ideal tool for creating focused images and light