The product is used to hoist speakers so that the music is more evenly distributed to the audience. The major problem with the speakers I purchased was that they did not come with a base or legs to hold up the speakers. The salesman who sold this to me online gave me a full refund for this incomplete product without requiring me to return it to a store or via UPS. I can't recommend this product to a friend ONLY because of the missing part of the product. Otherwise, any complete assembly will work-I've purchased them from sam ash before.
Bob the singing jogger
delray beach, FL