Shimano BR-M755 disc brake system is designed for cross-country cycling and offers reliable braking performance. It features mineral oil hydraulics, which provide smooth and consistent braking power. The system includes the BR-M755 brake lever, SM-DB-OIL mineral oil, and SM-RT75 rotor. It's compatible with both metal and resin brake pads, allowing you to customize the braking feel and noise level. The system is easy to install and maintain, with clear instructions provided in the manual.