Wood-type golf club heads include: a club head body member defining an interior chamber; a weight system engaged with a rear perimeter portion of the club head body member; and a connection system connecting the weight system with the club head body. The battery pack case assembly includes a case body and a cover. The formed mixture can then be quenched or otherwise allowed to cool to provide an article in finished form. During data write, the virtual ground line VGj corresponding to the write target bit line pair BLj, BLj is connected to a power supply voltage VDD through a transistor 33j. A controller is configured for communicating with the sensor probe and the first flow meter in the first treatment tank, and the second flow meter in the second treatment tank.