The AJP rubber is a component that sits on the brake lever and holds the brake pads. The AJP spring is a component that is used to provide a certain amount of return force, to return the brake caliper to its original position after it has been activated. The AJP brake lever is a component that holds the brake pads and applies braking force to the rotor or drum. These parts are specific for AJP brand motorcycle brakes.Referencia: HR9041