SHIMANO Bike MTB Brake Shifter Set Brake Levers & Shift Levers ST-EF51-8 3x8S Compatible with V-brake system; Noise-dampening bumper stopper Sold as one pair; 3 speed left and 8 speed right, 24 speed total Suits 22.2mm diameter handle, Allen wrench installation Trigger type handle, easier to vary speed, with inner cables Alivio/Acera/Altus compatible.100% new and high quality, no original package