Size and quantity:

Microscope: about 26x15x1.5mm, hole: 2mm, 5pcs;

Test Tube Cup: about 27.5x19.5x1.5mm, hole: 2mm, 5pcs;

DNA: about 26.5x12x1.5mm, hole: 1.8mm, 5pcs;

Chemical Molecules: about 21x25.5x1.5mm, hole: 1.6mm, 5pcs.