The Me-163 was the first (and only) rocket powered fighter used in combat. It was also the first aircraft to ever fly at 700 mph, in 1944. As an interceptor, the 163 was less than outstanding, with only about a dozen Allied aircraft shot down, for a loss of 9 Komets.
The rocket engine used "C-Stoff", hydrazine hydrate and methanol and "T-Stoff", hydrogen peroxide. These were interesting to me because they are "hypergolic". This means that they need no ignition source. Just mix the two chemicals in the combustion chamber and they burn. This proved very interesting when there was a hard landing and fuel lines leaked. There were also incidents when a fueled Komet would blow up just sitting on the tarmac waiting for the pilot to arrive.
This is a double kit, containing two of everything in one plastic zip lock bag. The decal sheet has enough markings for three aircraft. Only one set of instructions, but that's enough.