Welcome to our store! 1. WATERPROOF DESIGN: The motor features a waterproof design and related technology, offering some rust protection and normal operation in rain. 2. 14 POLE, COPPER COILS: 14 pole, 12 slot high torsion motor design. High purity copper coils maximize efficiency and offer temperature resistance up to 180-200℃. 3. CNC MACHINED STEEL BILLET: Waterproof brushless motor utilizes CNC machined steel billet, 6061 T6 aluminum heatsink with secondary oxidation treatment for a high-end, refined appearance. 4. HIGH ROTATING BEARINGS: High-speed ABEC5 super durable imported sealed bearings provide low friction, low noise, high accuracy, and long-lasting performance. 5. SILICON STEEL SHEET: Imported ultra-thin silicon steel sheet offers excellent performance, high magnetic conductivity, high silicon content, and outstanding insulation and heat resistance. Item Type: Brushless Motor Material: Aluminum Alloy, Copper Color: Black Red Shaft Length: Approx. 12 mm/0.47 inches Shaft Diameter: Approx. 4 mm/0.16 inches Interface: 3.5mm gold-plated male connector Package Includes: 1 x Motor 4 x Motor Mount Accessories 8 x Screws 1 x User Manual 100% Satisfaction: Our customers are our top priority. If you encounter any product issues after receiving the item, such as damage or incorrect quantity, please contact the seller immediately. We will do our best to provide you with satisfactory after-sales service. Thank you for shopping with us!