This is the model rocket kit of SA-11 missile. NATO reporting name "Gadfly". This Gadfly military scale rocket flies on a cluster of three 18mm rocket engines. Fly it on three A8-3's for lower flights on smaller fields. Or, go all out with three C6-5 engines for an exciting launch. The kit comes with all parts needed to build this rocket including plastic nose cone, ejection baffle, decals, pre-cut fins and rings and pre-assembled 18" parachute. No engine hooks are provided with this kit, as there's no room for them. Dimensions: Overall length : 26.7" Diameter : 1.64" (BT60) Weight : 5.08 oz. Requires (not included) Assembly, Wood glue, Hobby Knife, Sandpaper, Masking Tape, Primer and Paint needed to build this rocket. Launch system with 3/16" Launch Rod, Cluster-Compatible Launch Controller and Rocket Motors needed to launch this rocket and are not included. Recommended Motors Estes 3 x A8-3, 3 x B4-4, 3 x B6-4, 3 x C6-5