Great Planes 4mm Male/3.5mm Female Bullet Adapter (Set of 3) FEATURES: Connects a motor with 3.5mm Male Bullet Connectors to an Electronic Speed Control with 4.0mm Female Bullet Connectors INCLUDES: Three Great Planes ElectriFly 4.0mm Male Bullet to 3.5mm Female Bullet Adapters INCLUDES: Three Great Planes ElectriFly 4.0mm Male Bullet to 3.5mm Female Bullet Adapters