The directions are the world's worst. Diagrams are not to scale and are confusing. Tiny diagrams are hard to read and confusing. Luckily I am mechanically inclined and could figure it out. Bolt anchors were assembled backwards. Got that figured out. Bolts were an odd size 31/64th, which sent me hunting for a drill bit I couldn't find. Might be nice to include the drill bit. To drill 8 holes, nearly a 1/2" in width, in cement, you really need an impact driver. Be advised.I am satisfied with the railing. Just wish companies would do better with directions.