SHIMANO TOURNEY REVOSHIFT LEFT 3 SPEED SHIFTER SL-RS35LSBP
My daughter's Trek came with a 6-speed Shimano Revoshift SIS Index. It's a new bike. She can shift to higher gears easily but does not have the grip strength to shift back
SHIMANO REVOSHIFT Shifter SIS INDEX 7-speed | SHIMANO BIKE-EU