M21 Rear Derailleur 6,7 Speed, Short Cage Size:One Size Ratchet-and-pawl clutch is easily adjustable

Ratchet-and-pawl clutch is easily adjustable and repairable

Next to skin fit

Aloe barbadensis (aloe vera) leaf juice

Bright-light and low-light ChromaPop™ interchangeable lenses

M21 Rear Derailleur 6,7 Speed, Short Cage Size:One Size Ratchet-and-pawl clutch is easily adjustableRear Derailleur for 1 x 6 7 Speed Direct Attachment Type Super Short Cage Max. Sprockets: 32T Total Capacity: 21T Model No.: RD M21SS Cassette Compatibility: 6 7 Speed Cage Type: Super Short Cage Front Chainring: Single Max. Sprocket: 32T Min. Sprocket: 11T Total Capacity: 21T Guide Pulley: Engineering Composite with Steel Bushing Tension Pulley: Engineering Composite with Steel Bushing Bracket Body: Resin Black Mount Type: Direct Attachment Bracket