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4 Pcs Upgraded Scientific Glass Test Tubes and 4 Pcs Funnels Set with Down Stem for Lab Experiments Includes 2 Cleaning Brushes(4" Glass Tube 4pcs+0.6" Funnel 4pcs)
Glass Tubes 12 Piece, Reusable Glass Straws 4 Inch Long, OD 10 mm, Thickness 1.5 mm, Industrial Borosilicate Glass Tubing for Short Cup (10mm-4IN-Clear)