I have these 24 saftey hand rail posts, for nearly 200' of saftey rails that attach to the side or on top of a deck or roof with sds screws. Slide 2x4's into the slots and you get a quick easy saftey rail that you don't have a bunch of nails to pull out when your done and you can easily reuse the 2x4.
Fast and efficient. They pay for themselves after one use.