Out of Stock.
The Estes Pro Series II 24mm Engine Retainer Set includes the parts to create two screw-on motor retainers for your model rockets. The retainers allow you to quickly load and unload engines from your rockets.
The threaded part is permanently glued to the end of your rocket's motor tube while the other part is a screw-on cap to hold the motor in place.
Please note that manufacturers sometimes update their products and packaging. If receiving a specific version of a product is important to you, please contact us before ordering.
