SHIMANO ALTUS M315 3x7/8 Speed Groupset with M315 Shifters and M310 Front (TOP SWING)/ Rear Derailleur Original parts - AliExpress Sports & Entertainment
Shimano Altus M310 7/8 Spd MTB Rear Derailleur - Cambria Bike
Shimano Altus RD-M310 SGS Long Cage Rear Derailleur Bike Hybrid MTB 7 8 Speed | eBay
Shimano ALTUS SL-M310 Mechanical Right Shifter 8-Speed