With this kit you can make a motor mount to use a "long" 24 mm E motor such as the TSP E12 or E20, but also the 24 x 95 mm Aerotech F in your model rocket with a body tube type Estes BT-70 or equivalent.

Includes an adapter to use 24mm D-type motors, 70mm long.
Contains a cardboard motor support tube, two plywood centering discs, a thrust ring and a metal hook to block the motor.