A brake drawing system applied in bikes and any motor vehicle provided with handbrake and pedal driven brake operates by having a pull rod to drive a push rod to engage in linearly reciprocal motion for activating the brake; a brake lever pin on the pull rod constituting transmission between push rod and pull rod; the push rod penetrating an adjustment bushing on the brake lever pin to adjust brake openness by changing relative positions between sleeve and brake lever pin without interfering with the push rod to maintain pull rod openness as adjusted.
