Abstract: A wrist exerciser that uses nested semi spheres to work the wrists. It has an outer bowl-shaped housing that can be mounted to a wall, or can he held by the user using a special glove. A second bowl-shaped device called the pendulum has a handle in the center and fits within the housing. A third member called a pressure bowl is fitted into the outer housing. The pressure bowl has an open bottom to let pendulum handle pass through the bottom of the pressure bowl. The user tightens the pressure bowl down to increase the tightness of the pendulum within the outer housing. A user can mount the device on a wall or grip the bottom of the outer bowl. Then, the user holds the handle on the pendulum and rotates the pendulum around the outer housing, back and forth in any desired direction to work the wrist.