Mountain Bike Hydraulic Brake SetRotor Compatibility: 160mm / 180mmMaterial: High-strength aluminum alloyBrake Fluid: Mineral oilClamp Diameter: F22.2 – F22.4Total Weight(excluding packaging and tubing): 420g ±10g Total Weight(excluding packaging):505g ±10gLever: 106g ±5g each Caliper: 105g ±5g each Internal Cable Routing Ready:Innovative 5-line body design supports internal cable routing, allowing brake lines to be hidden within the frame for a cleaner, more aerodynamic appearance. It also helps prevent external damage or interference that could lead to malfunctions. Vertical Cylinder Oil Reservoir:Designed with aerodynamics in mind, optimizing spatial layout and integration. Reversible Lever Design:Supports left-right hand swap for flexible installation. Precision CNC Machined:Entire unit is CNC-machined for superior sealing performance, minimizing brake fluid leakage. The cylinder is also designed for efficient heat dissipation, helping to maintain stable braking performance during intense rides.