Spare 3" O-Ring Belt for Van de Graaff Generator Human Anatomy_Human Anatomy Models and molecular structure for genetics

and molecular structure for genetics and biochemistry instruction

handling moderate pressure in benchtop fluid lines with resistance to temperature and chemical extremes

this demo motor on a molded ABS base operates at 6-8V to demonstrate visible-spectrum color mixing

28 inch outer diameter for glassblowing

Wide-field 100mm reading magnifier with a 15cm focal length

Spare 3" O-Ring Belt for Van de Graaff Generator Human Anatomy_Human Anatomy Models and molecular structure for geneticsSpare 3 inch O ring drive belt sized to the smaller Van de Graaff pulleys, kept on hand to keep electrostatic generators running once the originals stretch out of tolerance.