This is one Standard to D Engine Adapter, for Model Rockets (3 sets) by Estes Rockets. Please note in store availability and pricing may vary. Adapts D engine mounts to hold a standard engine.
Two simple steps transform a standard engine into a D size. Insert a standard engine into the adapter, and insert the adapter into a rocket. 3 adapters per pack. Reusable.
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.
Rockets weighing up to 4 ounces that would normally fly on C11 or D12 engines can be flown on B and C engines.
