Abstract: A sports training device which allows for easy interchanging of weighted inserts. The sports training device includes a body, a handle, a contact zone, a inner chamber, a capping mechanism, and a weighted insert. The weighted insert attaches to the capping mechanism which can be attached the body of the device. The weighted insert is enclosed by the body within the inner chamber. The contact zone of the device can be equipment such as a baseball bat, softball bat, tennis racket, hockey stick, cricket stick, or any equipment used to strike a ball.