Shimano BL-RS600 Flat-Bar Hydraulic Disc Brake Lever The Shimano BL-RS600 Flat-Bar Hydraulic Disc Brake Lever is crafted for those who seek a balance of lightweight design and stiffness. This Ultegra level component is ideal for both enthusiasts and competitive cyclists. With precision engineering, these brake levers ensure smooth and powerful braking for flat bar road bikes. Key Features Ultegra level component offering an ideal balance of light weight and stiffness Precision-engineered for hydraulic disc brakes, providing effortless braking Hydraulic fluid reservoir with auto-adjust for pad to rotor clearance Custom fitment with reach adjustment for all hand sizes Compatible with I-SPEC-II mount Easy bleed and clean hydraulic system, designed for use with Shimano mineral oil only Constructed with anti-rust material for long-lasting performance The Shimano BL-RS600 Flat-Bar Hydraulic Disc Brake Lever also features a hydraulic fluid reservoir that automatically adjusts pad to rotor clearance, ensuring consistent braking performance as pads wear. Its reach adjustment allows for a tailored fit for any hand size, enhancing comfort and control.