Ergonomic and powerful servo wave hydraulic disc brake levers offer exceptional control and modulationshort stroke servo-wave mechanism for quick pad engagement and more power for aggressive ridingan increase in pad clearance at the calliper has enabled Shimano to use their proven servo wave technology. As the brake lever is pulled a cam linkage enables rapid pad to rotor engagement, at the point of contact the cam moves across multiplying the leverage ratio and increasing the stopping powertool free reach adjustment for custom lever feel and positionforged alloy 1.5 finger brake lever for optimum strength and reliabilitymineral oil brake fluid is non-corrosive and less hazardous than conventional hydraulic brake fluidhinged clamp for quick installationi-spec-ev compatible