1pcs Double Convex Lens | 75mm Diameter and 300mm Focal Length measurements The end of each rod

The end of each rod has a 4-inch diameter circular plate facing the center and each have an insulated rubber handle at the outer end

Pipettes cover a variety of volume ranges

Durable and Safe Storage: The kit comes in an ABS box that measures 31

The brush head is flexible

1pcs Double Convex Lens | 75mm Diameter and 300mm Focal Length measurements The end of each rodHigh Quality Glass: Made from durable and high quality glass, this Double Convex 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. 300mm Focal: Featuring a 300mm focal, this lens is an ideal tool for creating focused images and light beams.