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Glass marbles, 11mm sold by the Dozen. Glass marbles can be used in the classroom and lab setting for many different experiments.
-19%
GSC International CS-11-100 Cork Stopper, Size 11 (Pack of 100)
SAR 219
GSC International 4-16061-20 Single Pulley, Plastic, Pack of 20
SAR 199
GSC International 16080: Single-Groove Pulley Kit, 50mm Aluminum Wheel – Demonstrates Force, Motion, Acceleration, Gravity, Inertia & Momentum – STEM Physics Tool for Classroom or Homeschool Use
SAR 91
GSC International 42007-10 Brass Physics Balls, 25mm (1 in.), Drilled, Pack of 10
SAR 321
