- Slim ergonomically designed Tiagra Dual Control Lever for hydraulic disc brakes offers powerful braking and effortless 10-speed shifting
- Ergonomic short shift arc follows natural hand movement with inward shift stroke distance reduced for rapid and precise gear changes
- Hydraulic brake lever provides powerful, controllable and consistent stopping power with less effort especially from the hood position
- Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear
- Contains left hand 2-speed ST-4720 STI lever
- Tuneable reach adjusters
- Easy bleed and clean hydraulic system, for use with Shimano mineral oil only
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