Gemini Titan ll LR87 Engines for 18 mm motors.

Fits BT-20 motor mount tubes. For scratch-building purposes. It is not a an exact scale replica, but a semi-scale version to adapt to 18mm motor mounts. Using a razor Saw or moto-tool carefully cut to separate the two engine bells. These nozzles are intended to be used for both BT-70 & BT-80 scale. They would be closer to a realistic size for BT-80, and potentially with less drag with the larger tube size.They still are a match for BT-70 as replacement detail for the original Estes Kit K-11 model rocket plans. My nozzles are not true to scale accurate representations of the real spacecraft booster rocket, thus perhaps may be not suitable for true scale static display, but they do look good!