Base- 1 inch wide, 2 1/2 inches long, 1/8 thick
Socket- 2 1/4 inches long, inside socket 1 1/8 inches, outside 7/8 inches
Arm- 21 1/2 inches overall, 1 inch wide, front lip 1/8 inch, bottom of lip to base 3/4 inches

Hello, Bruce. I'm sorry to hear that the 32-012 size doesn't match. Would you be able to provide precise dimensions for your own socket so that we can find a better option? Please note that the most important dimensions to consider are the height and width of the opening that takes the track. Everything else can be worked around.