This is a Emax ECOII-2004-2000KV Brushless Motor.

The engineers at EMAX are always seeking ways to design the ultimate motor with brushless technology. In their efforts, they produced the ECO II Series, a new line of brushless motors further improving on the performance and durability while retaining the same affordability.
Redesigned from the ground up, the ECO II boasts an all new architecture. With a more rounded design paired together with thicker reinforcements, maximum durability is achieved. Finished with a reflective surface, the ECO II offers a sleek modern design destined to satisfy the need for both aesthetics and durability.
In order to improve the performance from its predecessor, the ECO II utilizes N52SH arc magnets over prior N48 magnets, allowing more powerful throttle response and higher RPMs to be achieved. More torque and thrust is generated, allowing pilots the flexibility to comfortably meet the demands of any racetrack or flight situation.

Features:

1. A brand new design with a rounded bell and stronger attachment points for increased durability.
2. Fully mirror-polished finish that shines and glistens with even the smallest hint of light.
3. Upgraded N52SH curved arc magnets for tighter airgap and better performance.
4. Precision NSKbearing for unparalleled smooth operation.
5. 12x12mm motor mounting.

Specifications:

1. Framework:12N14p
2. Stator Diameter: 20
3. Stator Height: 4
4. KV: 2000
5. Thread Direction: Both
6. Maximum Thrust: 1130G(on 6s)
7. Propeller: 4-5
8. Weight: 16.6g

Package include:

5 X M2 x 6mm Screw

5 X M2 x 7.5mm Screw

3 X M2 x 8.5mm Screw

1 X Washer and screw for shaft