Shimano ZEE M640 Rear Derailleur 10 Speed

Dyna-Sys specific cable-pull for (HG-X) 1x10-speed mountain drivetrain compatibility
Shadow+ design: low-profile body and bracket to avoid chainstay and obstacle contact, with stabilizer switch to reduce chain drop and slap
Direct mount frame compatible allowing easier removal of rear wheel
Top-Normal return spring optimized for RapidFire shifters
SSC model cage is compatible for use with 10sp road or DH specific cassettes (11-23/11-28T)
SSW model cage is compatible for use with 10sp mountain cassettes (11-32/11-34/11-36T)
4 fluoric coated link pivot bushings minimize friction
Aluminum construction with sealed bearing 11-tooth guide pulley
Speed: 10sp
Color: Black