Glass Ball 5640 K 1 5640 2 5640 Inhalt 5640 1 {"autoplay":"false","autoplay_speed":"3000","speed":"300","arrows":"true","dots":"true","loop":"true","nav_slide_column":5} The glass ball is hollow and partly or wholly filled with water, becomes a magnifying glass. Reductions are created if held under water. Experimental kit 9 years + Pack size: 6,5 x 6,5 x 4,5 cm Weight: 41 g No. 5640