I started this build while I was waiting for the fins to dry on super big bertha so I decide to build my second epic 2 estes kit. The first one is probably still up there since I sent it on a c6-5 6-0 combo needless to say it was never seen again lol but anyway I am excited to build it again because to me this thing I sleep fast and it has a great paint scheme that I nailed on the first so this one should be better atleast in theory it should lol, it is a 2 stage rocket and the fins are very thin I don't know exact but thin had to be very lite on the sanding when I sealed them. I think the fins on their rocket look fast sitting still.