The Estes Mini to Standard size Engine Adapter allows you to use a mini Estes engine in place of an A8-3 standard size engine. Rockets weighing up to 2 ounces that would normally fly on A8-3 engines can now be flown on A10-3T engines. Made of high heat ABS plastic, the engine adapters come three to a pack and can be used over and over again!
Please note: These adapters were designed for Estes rockets with metal engine hooks using Estes engines. They may not work with other brands.
