The Shimano R400 Drop Bar Brake Lever Set features internal return springs.Internal return springsItem Specifications- Left LeverColorSilver/BlackWeight258gBrake Lever ActuationShort PullBrake Lever UseLeftCableRoadItem Specifications- Right LeverColorSilver/BlackWeight129gBrake Lever ActuationShort PullBrake Lever UseRightCableRoad