1pcs Convex Mirror, Shperical | 50mm Diameter and 150mm Focal Length Retort Clamp and complies with maximum limits

and complies with maximum limits for heavy metals (as Pb)

an adjustable-volume siren etc

This model shows two frontal sections through female genital organs

this Biconcave Lens is designed to last and provide accurate and reliable results in a variety of scientific applications

Size: 150mm x 120mm x 160mm

1pcs Convex Mirror, Shperical | 50mm Diameter and 150mm Focal Length Retort Clamp and complies with maximum limitsHigh Quality Glass: Made from durable and high quality glass, this Convex Mirror, Spherical is designed to last and provide accurate and reliable results in a variety of scientific applications. 50mm Diameter: With a diameter of 50mm, this lens is perfect for use in a range of optical experiments, including refraction, reflection, and more. 150mm Focal Length: Featuring a 150mm Focal Length, this lens is an ideal tool for creating focused images and