A set of two trolleys that are designed for use in the demonstration of and experimentation in dynamics. Each trolley features a recessed rectangular well for accommodating extra weights, increasing the effective weight of the trolley. * Single-piece virtually unbreakable ABS bodies * Each trolley has wheels that easily snap-in and remove * Includes attachable spring steel bumpers * Dimensions of trolley 132 x 55mm * Spring steel bumper is 78mm dia. https://elecena.pl/product/27206236/rapid-mini-dynamics-trolley-set-plastic-132-x-55mm 2024-11-10 https://elecena.pl/product/27206236/rapid-mini-dynamics-trolley-set-plastic-132-x-55mm 2025-01-04 https://elecena.pl/product/27206236/rapid-mini-dynamics-trolley-set-plastic-132-x-55mm 2025-04-02 https://elecena.pl/product/27206236/rapid-mini-dynamics-trolley-set-plastic-132-x-55mm 2025-10-05