This is the Great Planes ElectriFly|
2mm Male Bullet to 3.5mm Female Bullet Adapter.
Connects a motor with 3.5mm Male Bullet Connectors to an Electronic
Speed Control with 2mm Female Bullet Connectors
Three Great Planes ElectriFly 2mm Male Bullet to 3.5mm Female Bullet
Connector #1: 2mm Male Bullet
Connector #2: 3.5mm Female Bullet
Weight: .03oz (0.95g)