don't want to hijack this thread. here's a link to the rusto.

http://www.rustoleum.com/CBGProduct.asp?pid=130

i don't think there's anything better off of the shelf. spray, brush or roll.

i am suprised that the two bollards that went into the ground were not painted beforehand. also, regarding the concrete in the tube, since you can have shrinkage it is a good idea to come back and check and possibly throw some quick setting something or other in there to make the top of the tube proud if you are not going to cap it. i see this all the time with rail installers and quickset. they don't come back and deal with the shrinkage, water collects and before long if your posts are steel they rust out from sitting water.