Feature: 1. Adjustable Motor: with 4 pole 12 slot large torsion motor, waterproof design, 4 speed maximum braking force adjustment and 8 speed resistance braking force adjustment for proportional braking. 2. Waterproof Brushless ESC: 120A waterproof brushless ESC, compatible with sensorless brushless motors with T male plug, waterproof and dustproof, designed for RC models, suitable for various environments. 3. Improved Efficiency: Motor is made of high purity copper winding, which maximizes motor efficiency, provides the best reliability and maximum speed, and is convenient and practical. 4. Fine Crafted: RC brushless motor features CNC machined 6061 billet aluminum heat sink, high speed ABEC5 oversized bearings, and precisely balanced rotor for optimal reliability and maximum speed. 5. Safety Protection: Lithium nickel battery low voltage cut off protection, overheating protection, loss of throttle signal protection and motor blocking protection, easy programming and compatible with pocket program cards. Specification: Item Type: RC Brushed Motor ESC Set Material: Iron, Alloy, Plastic Color: Black Motor Size: Motor Length (Without Shaft): Approx. 50mm/1.97in Motor Diameter: Approx. 36mm/1.42in Motor Shaft Length: Approx. 15mm/0.59in Shaft Diameter: Approx. 3.175mm/0.13in Connector: 4.0mm Banana Head 120A ESC: Color: Blue Continuous Current: 120A Burst Current: 600A Battery: 2-4 Cells Lipo Bec Output: 5.8V 3A (Switching Mode) Resistance: 0.00035ohm Motor Plug: 4mm Banana Female ESC Size (without Cable): Approx. 44x32x32mm / 1.73x1.26x1.26in Suitable for (Flat Sports, Racing Models Such As:) for Traxxas, for Hsp, for Redcat, for Tamiya, for Axial Scx10, for D90, for Hpi Brand Use.. Package List: 1 x 3650 Brushless Motor 1 x 120A ESC 1 x Manual Note: 1. Due to manual measurement, please allow 1‑3mm/0.04‑012in error. Thank you! 2. Display calibration is inconsistent, the color of the item shown in the photo may be slightly different from the actual object.3. Please remove the cooling fan before using this ESC in water; clean and dry it as soon as possible after use to avoid rusting of the joints.