Shimano GRX ST-RX820 Shift/Brake Levers Enhanced Comfort and Control on Mixed Terrain If you're looking to upgrade your current drivetrain or you're building up a fresh gravel ride, then you'll want an excellent pair of shifters. The Shimano GRX ST-RX820 Shift/Brake Levers provide unmatched control and comfort for mixed-terrain riding. It features an anti-slip coating on the brake lever, flared handlebars optimization, and a textured surface on the hood for better control. There are several options available for this shifter. There is a left-side 2x shifter for 2x12-speed setups, a right-side 12-speed shifter, a left-side 1x brake lever for 1x12-speed setups, and a left-side lever with an integrated dropper lever for 1x12-speed setups. Features Textured surface on the hood helps provide better grip Anti-slip coating on the brake lever that works in wet or muddy conditions Hood shape optimized for flared handlebars1x12-speed left/front brake lever option available with an integrated dropper lever Designed for 12-speed drivetrains Average weight: 289g Clamp band: 23. 8 - 24. 2mm | Shimano | Grx St-Rx820 Shift/brake Levers St-Rx820(L) Rx820(F) | Aluminum