These are used in the construction of a gravel bed for the barn and are exposed to the road. This is an early review as I have no idea what rust factor they will be. You will receive 5 long pieces with 4 holes and 4 inches long, you will receive 10 medium pieces with 4 holes and 3 inches long, you will receive 20 short pieces with 2 holes and 2 inches long. 35 flat parts. So 20+40+40 = 100 holes. You have 80 screws. So you need more screws. They give you 115 grand as they say. I know they will work for my needs in every way except for rust, which I will be aware of in a few months. I would buy them again if they don't rust.