Sumart Universal Bleed Block Tool (2-Piston Caliper) - Green BYOB display The V4 version not only

The V4 version not only receives the electronic impulses and sends them to the front and rear derailleurs

*If using in extreme heat (+35°C) simply top up if needed

leaving manual gears in the dust

Tactile Side Buttons: Reliable

Sumart Universal Bleed Block Tool (2-Piston Caliper) - Green BYOB display The V4 version not onlyThe UBB 20 Universal Bleed Block is an essential tool designed for maintaining hydraulic brake systems, specifically engineered for 2 piston calipers. This tool helps prevent damage to ceramic pistons during the bleeding process. It can be adjusted by hand or with a 3mm Allen key if necessary. Specifications Protects Ceramic Pistons: Designed to prevent damage to ceramic pistons during maintenance 2 Piston System: Specifically engineered for 2 piston