UPKOCH 10Pcs Physics Glass Marbles for Smoothly Polished Glass Balls for Laboratory Supplies and Teaching Use Stimulate Interest and Observation Skills Random Style
Special Features
Teaching equipment:glass material, smoothly polished, does not hurt your hands, and slides easily,Fish Tank Glass Ball
Laboratory supplies:they are made from glass material for long time and use,Physics Glass Marbles
Glass ball :stimulate students' interest, analysis and observation skills, practical for teaching use,Decorative Glass Marbles
Fish tank glass marbles:put education in fun, cultivate scientific knowledge perfect for any school, or laboratory use,Glass Marbles Decor
Glass beads:very nice to look and flexible use for play, craft and decoration you will love it, Glass Ball
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