Bearing pullers are used to remove parts such as bearings, gears or pulleys from a shaft. They have legs which circle around the back or inside of a part, and a forcing screw which centres up against the end of the shaft. As the forcing screw is tightened, the arms pull the part towards the end of the shaft.
The hexagonal head is attached to the forcing screw. It is easily rotated with a socket wrench or spanner.
The forcing screw is a long, fine threaded screw that is rotated against the centre of the shaft. When the forcing screw is rotated, it applies a force to the component you are removing.
The cross arm attaches the legs to the forcing screw.
The reversible claw legs allow internal and external pulls.