These are actually better than I expected after reading some reviews about them on Amazon. Don't bother looking there for a better price...Hobbylinc's price is much better. Dimensions: you get six pieces 6 long and 15/16 high. The wall is tapered from bottom to top with the bottom 9/16 wide and the top 5/16wide. Color is sort of a blackish-blue. I think it looks realistic enough without paint, but I'm sure some of you will want to paint it. It's made of a hard plastic which can probably be cut with a hacksaw but definitely not a hobby knife. No assembly is required...just open the package and place them where you want them. I think they look great where I'm using them.