Shimano GRX ST-RX820 Shift Lever Unmatched Control and Comfort For Mixed-Terrain If you're looking for an excellent gravel drivetrain for your bike, then you're in the right place. The Shimano GRX ST-RX820 Shift Lever delivers light and responsive mechanical 12-speed shifting for mixed-terrain riding and racing. It has an ergonomic shifter design that improves comfort by decreasing pressure on your palms, while the textured, anti-slip brake lever surface increases control on bumpy terrain. Features Hood shape optimized for flared handlebars Secure grip for rugged terrain Anti-slip coating so you can brake in wet and muddy conditions | Shimano | Grx St-Rx820 Shift Lever Left | Aluminum