Abstract: An adjustable, customizable device for use in physical therapy and/or strength training. The device may have a rail; a handle; a weight, where the weight may be adjustably positioned along the rail and held in place against the rail via an attachment device; and a stop located on the rail adjacent the handle, such that the stop prevents the weight from coming into contact with the handle. When the device is held by the handle, the weight provides increased force the further the weight is located from the handle due to the cantilevered nature of the device. Thus, the amount of force used in various exercises can be adjusted by moving the weight along the rail, either between different types of exercises or as the user's strength increases. Different sizes and shapes of handles may be utilized to accommodate the user's hand size and exercise goals.