Materials This mountain bike brake hose is made of durable, practical materials, delivering long lasting performance and reliability. specifications Outer diameter: 5 mm Inner diameter: 2 mm This hydraulic brake hose is designed to provide a precise and efficient braking experience for your bicycle Color options Black Red Blue Key benefits Precise braking performance with the specified inner and outer diameters Durable construction for long term reliability Suitable for mountain bike hydraulic braking systems Clear color choices to match your bike style Compatibility and installation notes Intended for mountain bike hydraulic braking systems Please verify hose size and fittings before installation to ensure proper fit on your bike Usage scenarios Replacing a worn or damaged brake hose on a mountain bike to restore braking control on descents and technical sections Upgrading a bike in a DIY build to improve braking feel and response Routine maintenance on frequent riders to maintain consistent braking performance across varied terrains