Features: Premium alloys brake piston rod with high wear resistant rubber sealing ensures leakproof performances, doubling durability for reliability hydraulic disc brake systems. Precisions engineered to fit 80% of mainstream bicycles brake brands, this titaniums piston set offers seamlessly compatibility for easy installation without speciality tool. Ideal for mountain bikers, cyclists, and commuting enthusiasts puruses DIY maintenance solution to address brake sealing degradation. Withstands extreme temperatures, it guarantees consistent braking power during long distances cycling or harsh weather condition. The 4 piece seal replacement set empowers cyclists to eliminate brake failures risks in minutes, delivering years round safety for high intensities cycling. Specifications: Color:Two Choices Dimension:2.575x1cm/1.01×0.39in Component:alloys Package Includes: 1pc Brake Repair Piston note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.