For Shimano ST-EF500 Shifter Set 3x7/8 Speed 21/24 Speed V-Brake Lever Bike MTB

3x7 Speed Shifter Set. Fit：For Shimano ST-EF500. 3x8 Speed Shifter Set. Left & Right: 3 x 7 21 speed/3 x 8 24 speed. Rugged, easy to install and easy to use.

eBay