High-Performance Design: The 3660 Built-In 4-Pole Brushless Motor is engineered for exceptional performance, delivering smooth and powerful operation for your 1/12 and 1/14 toy car accessories. Precision Engineering: Featuring a shaft diameter of 3.175 mm, this brushless motor ensures a precise fit and seamless integration into various toy car models, enhancing overall functionality. and Reliable: Constructed with high-quality materials, the 3660 Built-In 4-Pole Brushless Motor is built to withstand rigorous use, providing long-lasting durability for all your remote control toy needs. Easy Installation: Designed for hassle-free installation, this brushless motor is perfect for hobbyists looking to upgrade their 1/12 and 1/14 toy cars with minimal effort. Versatile Compatibility: The 3660 Built-In 4-Pole Brushless Motor is suitable for a wide range of toy car accessories, making it an ideal choice for enthusiasts seeking to enhance their RC vehicles' performance. Specification:D:3660 3800KV Colour:Black Material:Plastic+Metal Package Contents: 1 * Brushless Motor 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.