SHIMANO SL-M310 Altus Rapid Fire 3 x 7 21 Speed Shifter Set w/Grey Housing OPTICAL DISPLAY.. RAPID FIRE.. YOU GET: (1) RIGHT SIDE 7 SPEED SHIFTER--(1) LEFT SIDE 3 SPEED SHIFTER--OUTER HOUSING--INNER CABLES--CABLE CRIMPS--INSTRUCTIONS.. GREY OUTER HOUSING..