Physics teaching tools-- convex lens is suitable for a variety of activities including physics classroom demonstrations, crafting, and more,double convex glass lens Convex lens small-- double convex lens provides a clear and enlarged view to enhance visibility,experiment tools Convex lens-- its small size allows for easy to storage in a bag or pocket, making it a handy tool to have on hand whenever you need it,optical lens for teaching Convex glass lens-- the lens provides clear magnification for high-definition viewing, allowing for easy use,transparent optical lens Physics optical lens-- whether you're exploring nature, or examining small details, this lens will enhance your visual experience with its clear viewing,optically lens ASIN B0DJHJQC1D Item Weight 1.44 ounces Manufacturer Anneome Item model number 6656ZPV3X45C18040430 Product Dimensions 3.54 x 3.54 x 0.31 inches