24 Volt 500w Motor Brush Speed Controller & Universal Electric Bike Bicycle Scooter Grip This item Suitable for electric bike & scooter 1. Speed Controller: Speed Regulator 1-4 V(Throttle ), Protection:20V  0.5V, Current Limit:28A  1A Short Voltege, Match Motor:24V 500W 2. Universal 12v - 60v Grip: Throttle Control Set Three Pin Wire length:280mm, Inside Diameter:22mm, Size:130 x 32mm. REDpositive pole Blacknegative pole BLuesignal wire