Dual-Action Technology

These are not standard bolts and Wolf Tooth's bolts will not work with this chainring

The slim form factor pairs with the included lock-on partial grip and fit alongside all lever style dropper remotes

check out the pros and cons below

Shimano Zee SL-M640 10 Speed Right Shift Lever - 22.2mm Bar Clamp - 10 Speed Virtual Parent Dual-Action TechnologyThe Shimano M640 Zee shifter features crisp, consistent shifts and 2 way release. The shift levers ergonomics make for an extremely comfortable, intuitive arrangement assuring no missed shifts. This is a 10 speed unit and fits directly onto the bar. Includes shifter cable and cable crimp.