Plunger cart, low friction, designed to study motion and collisions on Track. Spring-loaded plunger for elastic collisions. Also compatible with other common carts and tracks
VWR* Mini LED Light Box, saves bench space and can be stored in a drawer, Slim light panel, LED light source stays cool and has longer life (10,000 hours) and low power consumption, Powered by six 1.5V AAA, Dimensi