The Jetpacks main fuselage is made hollow cast using 4 layers of roto-cast resin. A 5th additional layer of harder resin is added to the main fuselage for added strength. Solid and hollow casts make up all the remaining parts making for a strong yet lightweight prop. Overall weight is 8-9lbs or 4kg. All pieces shown which include the thrusters, vent dome, nose cones, octagon stems and triangular surface details come separate from the main fuselage for easy assembly and paint.Easy access to the Jetpacks interior with removable cover panel included. Jetpack comes in kit form and non-painted with some assembly required.No serious Fett collector should be without one of these Jetpacks..Purchase yours today!