Clackers are a toy made of two hard plastic balls on plastic arms or a string which when jerked up and down the balls hit together making a loud click-clacking noise. the idea was to keep them active and clacking for as long as possible – Yes ok this was another toy fad 🙂 but they have had a number comebacks. They were very popular in the late 1960s through to the early 1980s.
The Clacker was discontinued over safety concerns as the balls/ends could be a little wild. A newer version of the Clacker which added fixed arms to the balls so the motion and sound were easier to achieve.
The size of the weights/balls varied between models but a diameter of two inches was typical, with the original version with practice you could make the balls hit together above the hand and not just below.
As we many toys Clackers were also known as Ker-Bangers and Clatter Balls and many other names.