This 34.3.2 shoe works with 3/4″ square MEGA iron balusters, and sits on an angled surface. It comes with a set screw. Has Set Screw – The Set Screw is a small screw on the side of the shoe that can be tightened to hold the shoe in place. It does not go into the floor. See additional product images for a more clear understanding of the set screw.