Features1High-strength aluminum alloy with CNC machining. 2Ergonomic three-finger levers for comfort. 3Suitable for 22.2mm handlebar diameter. 4Brake pads distance is adjustable. 5Strong sealing for easy maintenance. 6Applicable to power assisted bicycle and electric scooter.SpecificationFeatures:High-strength aluminum alloy with CNC machining.Ergonomic three-finger levers for comfort.Suitable for 22.2mm handlebar diameter.Brake pads distance is adjustable.Strong sealing for easy maintenance.Applicable to power assisted bicycle and electric scooter.Specifications:Material: Aluminum alloyColor: Black / Red (optional)Type: Electric power-off oil disc brakeMounting Base Screw Hole Spacing: B-pillar: 51mm; A-pillar: 74mmBrake Pad Clearance Adjustment: Knob adjustment (unique and convenient)Front Pipe: 890mmRear Pipe: 1570mmWeight: Front: 272g; Rear: 283gNote: When the brake pads are worn, just adjust the knob to reduce the distance between the two brake pads, so that your braking feeling can always be in the best state and maintain a good braking feeling for a longer time. However, when the wear reaches a certain degree, it is recommended to replace the brake pads immediately.Package List:1 * Front Caliper1 * Rear Caliper2 * RotorPackage List1 * Front Caliper1 * Rear Caliper2 * Rotor