Adapter 13 - 18 mm - Estes
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Adapts standard engine mounts to hold a mini engine. Two simple steps transform a mini engine into a standard size one. Rockets weighing up to 60 grams that would normally fly on A8-3 engines can be flown on A10-3T engines.
How to use it: Insert a standard engine into the adapter, and insert the adapter into a rocket.
NOTE: This motor adapter has been tested in products that use ESTES metal engine hooks. It may not work with other brands of engine hooks.