Hand bead depressor for a tire mounting machine, also known as a "third hand", a device extremely useful when mounting a tire onto a rim. When placed on the rim at a point where the tire is already partially mounted, it secures the tire against accidental slipping off, thereby streamlining the entire process of fitting the tire onto the rim.

The device is made of a very durable component that performs well when working with aluminum rims (does not scratch the rim).