http://www.partsamerica.com/Product...umber=D6202&PartType=832&PTSet=A
Appearently, they can, but it's kind of privcey.
I've done the removal method of smacking it off from underneath, but if the wheel has never been off, it would be best to use the correct tool for the job. Might just save both damage to the wheel and injury to the hands.

Bill Burmeister