This reviewer received promo considerations or sweepstakes entry for writing a review.
To be fair, these are simple steel punch-out design.
That said, they ARE robust, if not simple, and the bottoms, top, and ledge that holds the speaker back are all padded. So work for angling the speaker sound slightly up, or down. I would imagine also helps a bit more with vibration dampening. At list price, may not be necessary, but if the cost is not a concern, they work.
