Description This handheld reading magnifier features a transparent round convex glass lens with smooth edges, making it ideal for students, teachers, and DIY enthusiasts. The optical lens for magnification provides precise light focus, helping in science demonstrations, physics convex lens experiments, jewelry watch repair, and craft projects. Its clear material ensures color accuracy and safe use for all ages. Features - Color: Transparent -Material:Acrylic - Size: 4.20X4.20X0.80cm/1.65X1.65X0.31in - Size: 2.50X2.50X0.20cm/0.98X0.98X0.08in -Precise light focus: the convex lens accessories in this set provide precise light focusing, perfect for handheld reading magnifier users needing clear magnification details in diy and science experiments -True color transmission: these optical lenses are crafted from clear material, ensuring transparent light passage and authentic color reproduction for photography optical lens projects and artifact display -Safe for all ages: the round magnifier lens features smooth edges, making it suitable as a physical optics lens for student science demonstration tools and safe exploration activities in classrooms or at home -Versatile application: easily adaptable as convex lens for lab, jewelry watch repair lens, or creative decor pieces, meeting various magnifier glass lens needs for teachers, students, and crafts enthusiasts -Durable & easy maintenance: designed for easy cleaning, each small convex lens retains clarity over time, making them optical lens for magnification in craft and experiment projectsPackage list: 25 x 25mm Convex Lens 25 x 42mm Convex Lens