The product was not able to be used as delivered to me. The screw hole would not accept the designated screw and the hole for the nut similarly was undersized. The designated screw was too short for their product. After enlarging the holes and sourcing a longer screw the head of it ( which was smaller than the designated screw) would not fit in the recess of their product.
Good idea but terrible design/quality control. Unless you're handy and really want this STAY AWAY!