Noseclip, plastic, foam-padded noseclips help increase the accuracy of spirometry results by eliminating the escape of air through the nostrils during testing
KidWind Red Blade Set, 8-inch diameter wind turbine blades are optimized to spin at very high RPMs, fit on any DC generator or motor with a 2 mm driveshaft, Recommended for College, High School, and Middle School Science
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