Retail Price: $5.99
Our Price: $4.79
Estes Standard to D Engine Adapter Adapts D engine mounts to hold a standard engine.
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.