Push the plunger and three thin wire legs emerge ready to grab their "prey" (small items). Once caught release the items into a container, by again pushing on the plunger. This 8" long plastic grabber really works the muscles of the thumb, index and middle fingers helping to develop strength and stability in this area. Also helps to develop the ability to use tools. Low price allows you to order many for use with groups or to recommend for home programs. Supervision recommended due to design of legs. Try it with small animal figures or our spiny balls.