Multiple parts imported as 1 single part

Im sure this happens all the time but does anyone have any good tricks for seperating a single part that was imported by a STEP translator into muliple bodies or aparts not sure what the best way to do this is?, The picture shows the 2 parts I need to seperate, and Ive attached the STEP file if you want to give it a try..

Thanks So much

David Thomas

SolidworksGeneral