Crutchfield Customer Review (What's this?)
Gave them a low review not because they didn't work, but because they were different than what was pictured on the web site. The ones I received did not have the hole in the middle that would allow you the option of using a screw to mount them. They worked for my application, but had I needed a more secure mounting method they wouldn't have worked.
Pros: Worked ok
Cons: Not as pictured