Description
Shimano Ultegra ST R8050 Di2 Caliper Brake Lever Left 2 Speed ModelNumber=K4872 Super polished bearing races for Super polished bearing races for low friction rolling Color Black Tooth Count 50 Tooth Count 34 Tooth Count 50 34 Round or Oval Round Drivetrain Speeds 11 Chainring BCD 110 Material Aluminum Material Al Carbon Defined Color Black Direct Mount Type Direct Mount CINCH