1100% brand new high quality. 2Made of high quality metal for maximum durability. 3It is easy to install, but professional installation is highly recommended 4It can be used for two batteries, the maximum speed is 30KM/H. 5Designed for Ninebot ES2/ES3/ES4 electric foldable scooter.Features: 100% brand new high quality. Made of high quality metal for maximum durability. It is easy to install, but professional installation is highly recommended It can be used for two batteries, the maximum speed is 30KM/H. Designed for Ninebot ES2/ES3/ES4 electric foldable scooter. Specification:Condition: 100% Brand NewMaterial: Metal Color: Silver Voltage: 36V Size: 15 * 5cm/5.9 * 2inPackage Weight: Approx. 244g/8.8ozPackage List:1 * Scooter ControllerNote:1. Please allow 0-1 inch error due to manual measurement, thanks for your understanding.2. Maintenance and replacement requires some professional maintenance knowledge.