This is a clone of the S.C.R.A.M. rocket from the old Estes "Mini Tri Pack". The rocket was built from plans from JimZ's site. I couldn't find 13mm thrust rings anywhere so I took my razor saw to a spent 13mm engine case and used that. Works great! I am working on a "complete" set of S.C.R.A.M.s, culminating in a 3x24mm clustered BT-80 upscale. I decided to forego the traditional light grey/olive drab paint scheme and apply a different twist for each rocket. I chose yellow and black for this one. Decals have been ordered from Excelsior but have not arrived as of this posting.