SRAM Apex Disc Brake Lever - Left/Rear Flat Mount 2-Piston 20mm Offset BLK A1SRAM Apex Disc Brake and Lever Left Rear Flat Mount 2 Piston 20mm Offset Black A1. Theres no need for a shift mechanism but the SRAM Apex disc brake is still packed with features. The hood shape has an optimized shape to fit a wide range of hand sizes and the tooled Reach Adjust provides additional personalization. Optimized hood shape fits a wider range of hand sizes Textured shift hoods for control and comfort Reach Adjust to personalize fit for