The motor adopts waterproof design and related waterproof technology, has certain anti-corrosion function, and can operate normally in the rain. CNC machine tool processing steel billet, 6061-T6 aluminum heat sink, secondary oxidation treatment, high-end and fine appearance. High speed ABEC5 ultra-durable imported sealed bearings, low friction, low noise, high precision and long-lasting use. 3.5mm gold-plated connector, 3.0/4.0mm output shaft, included accessories, including mounting screws. The dynamic balance of the outer rotor is controlled within 10mg, ensuring no abnormal noise, no vibration, and high smooth operation. Hign-concerned Chemical:none Model Number:2826 Tool Supplies:Assembly Category Four-wheel Drive Attributes:Motors Use:Vehicles & Remote Control Toys Application:RC Airplane Fixed-wing Glider Aircraft Helicopter The product appearance and printed words may vary depending on the batch, but this does not affect use. KV Value:1900KV Colour:Black Material:Metal Package Contents: 1 * motor 1 * accessories kit 1 * Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.