Up for bid is a original Ideal Toy Co. updated part. This is used to tighten the chain for his arms that gets loose in time, can be easily install by you. The white plastic "tong" Snaps into the gear hub and then around the chain. If your arm chain is loose the chain will "slip" around the top chain hub that is connected to the axle that turns his arms. I will answer any questions. FREE shipping for the Holidays!