This is the 35mm 1000kV brushless motor used in the Gee Bee Sport Scale Airplane from ElectriFly by Great Planes.
Features: Replaces worn or damaged motors
Includes: Brushless Motor with Wire Leads and 3.5mm Bullet Connectors
kV Rating: 1000
Diameter: 1.4 (36mm)
Motor Length: 0.79 (20mm)
Note: The header card says this is a 1450kV motor. This is incorrect. The correct rating is 1000kV.