⭐️ Carefully selected and created using motors with minimal magnetic force differences between left and right sides. ⭐️ These motors retain as much torque as possible without demagnetization. ⭐️ A high-viscosity special contact agent has been injected, and the motors have been carefully broken in at low voltage. ⭐️ No special maintenance is required after use; simply apply oil to the bearings periodically. ※ If there's a blockage, run the motor at 3V without load to resolve it. ⭐️ Due to the nature of the product, please purchase only if you have sufficient knowledge. ※ The displayed rotation speed is measured within the first minute of operation, but please consider it as a reference only, as variations may occur depending on the measuring device. Rotation speed is not guaranteed. ※ The motor can has not been opened. The package has been opened. ※ No claims and no returns are accepted. ● Shipping will be on weekdays only.