Item Type: Brushed Motor Controller Kit Material: Aluminum alloy rubber Weight: Approx. 502g/17.71oz Throttle Grip Caliber: 22.2mm/0.87in Controller Parameters: Rated Voltage: 48V Rated Power: 800W Package List 1 x Controller 2 x Throttle Grip 1 x Lock 2 x Key 1 x Charging Port 1Aluminum Alloy Controller Shell: The controller shell is made of aluminum alloy, which can protect the internal circuit, have good heat dissipation and avoid thermal overload. 2Rubber Throttle Twist Grip: The grip is made of soft rubber material for a more comfortable grip, and the hands will not be tired after long term cycling. 3High Performance Controller: Speed controller can provide stable speed, and is sensitive to braking and steering control, working smoothly and quietly. 4Easy to Use: Electric bike controller kit is designed for 48V 800W, and is easy and convenient to use. You will get a controller, two grips, a lock with two keys and a charging port. 5Wide Application: This speed controller set is widely used in various applicable models of electric bicycles, tricycles and electric scooters, electric motorcycles.