I usually don't review products but this one is a definite buyer beware.  I don't know if mine was damaged during shipping or while sitting in a pile of this in a box; but the pads are barely staying on the arms.  The pegs that are meant to keep them in place are almost completely torn off and I've not even used the product.  I read another review on here to try the Quick-grip bar clamp and it is a MUCH better product.