I need to rename all of the files in a folder with the following filename format;

itemID-straight-bottle.png

TO

itemID-bottle.png

How can i accomplish this with a cmd script or in the command line?

example;

REDHI20806-straight-bottle.png TO REDHI20806-bottle.png

I should have said, this is in Windows and i want to use either command line or a batch file to run this renaming on all files in a folder on a specific drive