Shimano ST-EF51 3x7/8 21/24Speed Brake & Shifter Levers Combo Set W/ Shift Cable

3x7 Speed Shifter Set（3 Speed Left Shifter+7 Speed Right Shifter）. 3x8 Speed Shifter Set（3 Speed Left Shifter+8 Speed Right Shifter）. 3 Speed only- Left Shifter. 7 Speed only- Right Shifter. 8 Speed only- Right Shifter.

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