This is the 2400kV Neu-Castle Sensorless brushless motor from Castle Creations.
Includes: 2400kV Neu-Castle Sensorless Brushless Motor with Power Wires and three each 4mm Male and Female Bullet Connectors
Requires: Pinion gear depending on application and connecting to ESC and battery
kV Rating: 2400
Length: 2.7" (69.5mm)
Diameter: 1.4" (36mm)
Weight: 10.6oz (301.5g)
Shaft Diameter: 1/8" (3.2mm)