The Shimano 105 ST-R7025-L is a left brake/shifter combo lever designed specifically for road bikes with smaller hands in mind. It integrates hydraulic disc braking with smooth and quick shifting for 11-speed drivetrains. The lever features revised ergonomics with smaller size and repositioned angle to enhance comfort and control. It uses Shimano mineral oil for braking and is compatible with BR-R7070 hydraulic disc brake calipers. The lever’s aluminum construction ensures durability while keeping weight reasonable for performance road cycling. This component provides precise, reliable braking and shifting optimized for riders seeking a professional-level setup with ergonomic enhancements.