Embodiments of golf clubs, golf club heads and removable golf club weights are generally described herein. The second pole tip is formed with a width that defines a track width of the write head. In addition to providing for a cost estimate at or near the time that the request is made, further embodiments of the invention, provide for a dynamic estimate of financial cost. A switching circuit is provided so as to prevent a large amount of current from flowing in a shorted monitor element among the plurality of monitor elements. Closure strips employing such materials, and methods of making such materials are also provided. The driving signal generating unit generates driving signals for driving the respective light-emitting elements arranged in the light-emitting element member.