1、Quality Assurance: Strict quality control and quality assurance, high safety factor, can be used with peace of mind. 2、Easy to Operate: Brake lever and the handlebar socket can be connected to the corresponding interface of the controller to realize the function. 3、Strong Compatibility: Thumb throttle handle has power lock display function, convenient and practical, and suitable for 22.5mm/0.9in handlebars. 4、Good Heat Dissipation Function: Shell is made of aluminum alloy with groove design, which can protect the internal circuit and avoid thermal overload. 5、Excellent Single Chip Microcomputer: As the main controller control chip, it controls and protects the motor and battery of the electric bicycle to improve reliability and service life. Item Type: Controller Handlebar Brake Lever Kit Color: As Pictures Shown Power: 500W Current Limit: 28A Material: Aluminum Alloy Weight: Approx.905g/31.9oz Controller Box Size: Approx. 9x6.5x3.3cm/3.5x2.6x1.3in 1 x Brushed Controller 1 x Pair of Handlebar 1 x Pair of Brake Lever 1 x Manual