Original Shimano A Ltus St Ef51 Ef50 7/8 Speed Shift Lever Brake Lever Conjoined Dip 21/24 Speed Mountain Bike Shifter Part - Bicycle Derailleur - AliExpress
SHIMANO ST-EF50-L/ST-EF50-8R Brake & Shift Lever | Other Levers | Croooober
SHIMANO ST-EF50-8 EZI FIRE STI SHIFTERS 24 SPD (8 x3) INTEGRATED BRAKE LEVERS | eBay