QUESTION what is the diameter of this part?
how does it adhere to the base?
the previous one melted
ANSWER Hi. Sorry, we don't have the diameter of this Hamilton Beach clutch available, but it is meant as a replacement for the 908™ Commercial Bar Blender (HBB908) (HBB908) models. If you need a replacement clutch for your machine, you would need to refer to a list of parts for your machine's model number. Thanks!