Does the 2615294309 coupling replace the rubber like coupling tube which is between the motor shaft and the outside shaft? The old one has an internal spine and is about 3/8 inch OD and 1 inch long. There are no pictures of this and it is not on the drawing.
I have a Dremel 395 Type 3

I just received my coupling and after opening package and starting to put it on, I learned that this coupling is too large in dameter. jWhat coupling do I need?