The Speakman 03-0232 is a diverter stem (or unit) used to repair Speakman Commander transfer valves. It is also identified by the alternate part number G20-0897.
The Kohler 42011-CP (also referred to as K-42011-CP) is a replacement diverter stem assembly designed for bathtub and shower faucet systems. It is specifically used to switch water flow between the tub spout and the showerhead.
The Kohler 31584-BC is a left-hand (R.H.) valve stem assembly service part. It is a genuine Kohler replacement component used for faucet repairs, specifically in assemblies that require a bright chrome finish.