Shimano 7 Speed Group Set Mountain Bike Shifter Lever ST-EF51 3x7Speed+Front Derailleur FD-TY500+Rear Derailleur RD-TY300 Shimano Altus ST-EF51 3x7 Speed Shifter Brake Lever Set with Inner Cables Shimano Tourney FD-TY500 Front Derailleur 6/7 Speed Shimano Tourney RD-TY300 Direct Mount 6/7 Speed Rear Derailleur Upgraded from FD-TX35 Package Includes ST-EF51 3x7 Speed Shifters + FD-TY500 Front Derailleur + RD-TY300 Rear Derailleur Shimano groupset, we guarantee its quality, any question in using, we are 100% responsible