Advanced Plastic Dynamics Cart, 2-Pack

This set of 2 advanced dynamics carts is made from virtually unbreakable ABS plastic in a single-piece construction. Each cart is mounted on three low-friction nylon wheels that produce straight travel over long distances. A lockable spring-load punch with two levels of compression is activated by a trigger knob on the cart top. The cushioned cart surface accommodates additional masses, and carts can be stacked to create two or three times the basic cart mass. Velcro pads on the rear enable the study of inelastic collisions. These carts are a precision upgrade over standard wood or metal dynamics carts.