microSHIFT M21 Rear Derailleur - 6/7 Speed, Super Short Cage, Black Wheel Skewers & Frame Axles 5mm at the ends and

5mm at the ends and 32mm in the middle

- Allows matching odd size derailleurs to most frame sizes

UPC: 799403317005

and Wellgo SPD pedals

microSHIFT M21 Rear Derailleur - 6/7 Speed, Super Short Cage, Black Wheel Skewers & Frame Axles 5mm at the ends andM21 rear derailleurs are designed to work with 6 and 7 speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs. Robust composite and steel construction Compatible with Shimano 6 and 7 speed mountain and road systems Product Specifics Largest Cog: 32 Rear Der Shifter Compatibility: Shimano Mountain Rear Der Shifter Compatibility: Shimano Road Rear Derailleur Mount Type: 10x1 Standard