Please note: These safety rail packages are safe at height but do wobble. This is not uncommon with any safety rail system of similar design on the market, which is most. Wobble at the top of the pole could be as much as 3"-4". The wobble is due to the clearance between the two stackpin ends... So if wobble is a problem for you then please order the a deluxe safety rail package... which is vastly more rigid.