Feature: 1. Motor Characteristics: 4 pole 12 slot high torsion motor design, high purity copper windings to maximize efficiency, high speed. Waterproof, suitable for game in all conditions. 2. Aluminum Alloy Shell: CNC machining of 6061 T6 billet aluminum alloy shell ensures great heat dissipation of the motor and longer working time, reliable for use. 3. Waterproof ESC: The ESC supports all weather competition, waterproof and dustproof; please remove the cooling fan before using this ESC in water; please wash and dry as soon as possible after use to prevent the connector from rusting. Compatible with sensorless brushless motors. 4. RC Car Accessory: Specifically designed for RC cars, with excellent start, acceleration and linearity characteristics. Comes with ESC programming card, DIY programming ESC, higher playability. 5. Multiple Protection Functions: Lithium or nickel battery low voltage cut off protection, overheat protection, signal loss protection, motor stall protection. Specification: Item Type: RC Car Motor and ESC Motor Parameters Shell Material: Aluminum Alloy Color: Black, red Maximum Voltage: <16V Maximum Current: 56A Watt: 900W Speed: 50000 Motor Size: Approx. 36 x 50mm / 1.4 x 2in (without shaft and cable) Shaft Length: Approx. 15mm / 0.6in, Shaft Diameter: Approx. 3.17mm / 0.1in Mounting Hole Diameter: Approx. 3mm / 0.1in Connector: 4.0mm / 0.2in gold banana head ESC Parameters Shell Material: Plastic Color: Black ESC Size: Approx. 53 x 40 x 40mm / 2.1 x 1.6 x 1.6in (without cable) Continuous Current: 60A Peak Current: 320A Applicable Battery: 2-4S Lipo BCE Output: 6V/5A Power Plug: T plug male Applicable: 1/10 remote control car (such as for Axial, for Traxxas, for Tamiya and other brand models). Package List: 1 x Motor1 x ESC1 x Manual1 x Programming card Note: Please allow slight error due to manual measurement. Thanks for your understanding.