TRP HY/RD Disc Brake. Features: Cable actuated hydraulic disc brake for road and CX Heat dissipating composite pistons self-adjust for pad wear Adjustable cable-leverage to optimize performance with different levers Kit includes integrated 74mm caliper/master cylinder (rotor and adapter sold separately) Semi-metallic pads Specifications: Brake Type: Cable Actuated Hydraulic Disc (Mechanical Disc) Brake Lever Pull: Short Pull Brake Mount: Post Mount Brake Pads: Semi-Metallic Barrel Adjuster: Yes Rotor Included: No Color: Grey Weight: 205g