Shimano ST-M020 is a set of shifters designed for use with a 7-speed cassette and a double or triple front chainring. The shifters are compatible with Shimano SIS-SP cables for shifting and Shimano SLR outer cables for braking. The rear shifter features a lever (A) for shifting to larger sprockets and lever (B) for shifting to smaller sprockets. The front shifter has a lever (a) for shifting to a larger chainring and lever (b) for shifting to a smaller chainring.