Deore LX ST M580 Dual control Shifters Shifter integrated Shift/Brake Lever 3*9 27 speeds for MTB bicycle bike part|speed mount|speed bearspeed folder - AliExpress
Shimano Rear V-Brake Deore LX BR-M580 - Sunrise Tri | West Babylon, NY
Shimano DEORE LX Dual Control Shift-Brake Levers for V-Brake ST-M580. Let's you shift gears up or down regardless of your hand position on the handlebar.