Durable aluminum alloy construction designed for performance and long life, delivering consistent functionality on every ride Compatibility focused on Guide Db5 Level brakes; designed to fit this model for or replacement and suitable for use with other compatible systems as needed Robust hydraulic sealing with two sealing rings to enhance sealing performance, reduce leaks, and maintain pressure under operation Featherweight design at approximately 5 g, providing a smooth, strong ride without adding unnecessary weight to the bicycle Practical, reliable component for maintenance and in everyday cycling and demanding riding conditions Use scenarios Routine maintenance on a mountain bike with Guide Db5 Level brakes: worn pistons to restore consistent braking feel and performance Workshop upgrade or : equip multiple bikes with a reliable piston to ensure uniform hydraulic performance across models that require this part Field readiness for long rides: carry as a spare piston to minimize downtime from seal or piston wear during tours or weekend riding Key attributes at a glance Material: Aluminum alloy Function: Brake lever piston designed for performance and longevity Compatibility: Specifically designed to fit Guide Db5 Level brakes; suitable for repairs on related models Sealing: Two sealing rings for enhanced hydraulic sealing and reduced leakage under pressure Weight: About 5 g, preserving bike handling and responsiveness