This Listing is a 3650 4 Pole 540 1/10 3300KV Brushless Motor  . 

This motor is a great quality for most 1/10 rc cars & truck ,

Motor Spec:  

Type: Sensorless

Port :  4

Waterproof : Rainproof

Motor KV : 3300KV

Shaft diameter: 3.175mm With Reducer Sleeve For 5mm Pinion

Battery Voltage Input : 2-3S Lipo or 6-7 Cell Nimh

Bearing: Front/Rear (NMB)

Connector: 4mm

Dimensions: 36 X 50mm