Semroc Engine Mount Kit #9 to BT-55 Fiber SEM-EM-9-55
Semroc Engine Mount #9 to BT-55 Engine Mounts center and support the model rocket engine in the body tube. Engine pushes against the engine hook and thrust ring as it burns and produces thrust. Simply assemble, insert into body tube, and glue into place. Kit contains engine mount tube for 0.950" (24mm) x 3.75" (95 mm) engine, two fiber centering rings for BT-55 body tubes, thrust ring, thrust spacer, and engine hook with full instructions.