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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
the ALU Series achieves an exceptional balance of durability
The Honest Case
4 cm in diameter
Designed as a direct replacement for classic Shimano M06 / B01S-style applications
a practical upgrade for riders who value shift quality
Sumart UBB-20 Universal Bleed Block & Piston Spreader Color:Pink the ALU Series achieves anSumart UBB 20 Universal Bleed Block & Piston Spreader Protect pistons, set the correct pad gap, and make 2 piston brake bleeding cleaner and more consistent. The Sumart UBB 20 Universal Bleed Block is designed to simplify hydraulic brake maintenance on 2 piston calipers. Built to help hold pistons in the correct position during bleeding and service, the UBB 20 protects delicate ceramic pistons, supports proper pad spacing, and helps mechanics achieve