Patent ID: 7077786

Claim:
A wrist exerciser comprising: a casing to be grasped by a user; a rotor rotatably received in said casing, said rotor further comprising: a spherical body defining a bore having an inner circumference along which an inner flange extends, the flange having first and second surfaces; a first weight member received in the bore and having an inner end portion releasably attached to the first surface of the flange, a first through hole defined in the first weight member; a second weight member received in the bore and having an inner end portion releasably attached to the second surface of the flange, a second through hole defined in the second weight member; and an axle extending through the first and second through holes of the first and second weight members and having ends extending beyond opposite ends of the body; whereby said first or second weight members being detachable to permit attachment of one or more of a plurality of weight members.