Ther are no detailed instructions, particularly regarding the depth and diameter of the holes for the concrete bolts and the diameter of the bit to be used.
2 step fit perfectly. Tough to use threaded bolts provided for installation so husband got concrete anchor bolts instead. Much easier. We had gotten an estimate for a contractor to build wooden rails. These were a 3rd of the price.
Good quality, if installing in anything other than concrete you will need to get the mounting bolts.Comes with concrete anchors only.But had lag bolts at home to install.