Combustion chamber, striated, brown phenolic, circular, tapering down to circular nozzle fixture plate, silver metal, probably stainless steel, with equidistant holes around top of plate rim for fixing this part of the engine onto the nozzle. Gimbal ring, gray silver metal, around throat of chamber, at bottom, with 2 shiny silver metallic boxes (pitch actuators) mounted on gimbal ring on near opposite sides of each other; plumbing, gray metal and red narrow fuel (hydrazine) line, on top of combustion chamber, with larger diameter gray or silver fuel inlet pipes, some shiny, running around bottom of chamber, then curving to run vertically up and over chamber to plumbing on top and giving pipes a J-shape when looked at on side of chamber. Cable, threaded metal, shiny, running alongside some propellant lines on top of gimbal ring.
Chamber comes with its own circular, steel dolly, painted battleship gray, glossy, with handle and handling or pull ring. Chamber screwed and bolted to dolly, on nozzle fixture plate at bottom, with red plastic protecting ring around lower rim of nozzle fixture plate.