Wrist and forearm strengthening device

1. A wrist strengthening device, comprising:

a first handle;

a second handle coupled to the first handle; and

a tightening component coupled to the first handle and the second handle, the tightening component comprising:

a clamp insert having a conical component adapted to apply pressure to an inner insert, and

a collar, surrounding the clamp insert, adapted to tighten and loosen the conical component against the inner insert such that tightening the collar effects inward radial pressure from the conical component to the inner insert and loosening the collar relieves the inward radial pressure;

wherein the tightening component is adapted to provide resistance to axial movement of the first handle and the second handle as the first handle is moved in a first direction and as the second handle is moved in a second direction, opposite from the first direction the tightening component further comprising a lock bearing located between the collar and the conical component, a handle bearing located between the conical component and the inner insert, and a retainer bearing adapted to hold the clamp insert, handle bearing, inner insert, and collar in place when the wrist strengthening device is assembled.

2. The wrist strengthening device of claim 1 , wherein at least one of the first handle or the second handle includes an opening on a distal end, and wherein the opening is configured to receive one or more weights.

3. The wrist strengthening device of claim 1 , further comprising a detachable handle, wherein the detachable handle is adapted to be received in at least one of the first handle or the second handle.

4. The wrist strengthening device of claim 3 , wherein the detachable handle is a replica of a handle of a golf club, baseball bat, tennis racket, lacrosse stick, or hockey stick.

5. The wrist strengthening device of claim 1 , wherein the first handle and the second handle comprise a gripping material covering the inner insert; wherein at least a portion of the collar covers the gripping material.

6. The wrist strengthening device of claim 1 , wherein the wrist strengthening device is adapted to be used in a casting motion.

7. The wrist strengthening device of claim 1 , wherein the first handle is adapted to be moved simultaneously with the second handle.

8. The wrist strengthening device of claim 1 , wherein the clamp insert is coupled with the first handle, and the inner insert is coupled with the second handle; and wherein the collar is located between the first handle and second handle.