Features: Make from Aluminum alloys materials, light weight, waterproofs, strong and Enduring. LCD display can clearly show states and data, backlights enables you to see scree clearly in dark environment, button for quick operate, easily to use. The Controllers is brushless type, working silently and sensitive to states of electric bike. Easiy to install and use, comes with mount for LCD display and suitable for 22mm/0.86inch handlebars. Suitable for electric bicycles, scooter. l Specifications: Materials: Aluminum alloys Size: as shown in the picture Voltages: 24V/36V/48V Undervoltage: 20v/30v/42v Rate power: 250V/350V Current limit: 13Amp Package Includes: 1set Electric Scooter Brushless Controllers note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.