This Crank is a #7/4.00mm. It will work on your Howard Miller, Ridgeway, Sligh, Trend, Pearl, Colonial, Seth Thomas, and more. If your clock has a Hermle, Kieninger, Jauch, or Urgos movement in it this key will fit. This is the same as our other crank key except this one has a black handle.
This key is American scale.
Check out our key size chart.