Shorty 4:~ For use with road or cantilever brake levers. Arms are easy to center with a spring adjuster screw. Brake pad is 70mm in length for greater stopping power. Center mount pads for reduced brake chatter. Oversized springs increase reliability in harsh cyclocross conditions. Open profile arms with center mount pads and concentric hardware for easy setup and reduced vibration. Uses road-type brake shoes so you can easily switch to pads made for carbon rims (comes with SRAM's 20R One-Piece brake pads). 173g (each).