1、Waterproof Design: The motor adopts waterproof design and related waterproof processes, which have certain anti corrosion functions and can operate normally in rain. 2、High Torque Motor And Copper Wire Coil: Design of a 14 stage 12 slot high torque motor. High purity copper wire coil, maximum efficiency, temperature resistance of 180‑200 °C. 3、Imported Ultra Thin Silicon Steel Sheet: Excellent performance, high magnetic conductivity, high silicon content, good insulation and heat resistance. 4、Sealed Bearing: High speed ABEC5 ultra durable imported sealed bearing, with low friction, low noise, high accuracy, and long lasting use. 5、Good Workmanship: Exquisite workmanship, beautiful appearance design, small portable size, providing you great using experience. Item Type: C3530 Brushless Motor Main Material: Aluminum Alloy, Copper Product Color: Black Red Weight: Approx. 123g / 4.3oz Shaft Length: Approx. 19.5mm / 0.77in Shaft Diameter: Approx. 4mm / 0.16in Interface: Approx. 4mm / Golden Head Male 1 x Motor 4 x Motor Base Accessories 8 x Screw 1 x Manual