Shimano Tiagra ST-4700 2-Speed Left Shift/Brake Lever Black. The Shimano Tiagra ST-4700 dual control lever features Reach Adjust and and an ergonomic form that is compatible with 10-speed drivetrains.

Shimanos OPTISLICK cables feature a minimal and uniform electrically coated layer that improves cable routing efficiency and provides excellent corrosion resistance

SUPER SLR design makes use of a friction-reducing mechanism lever and cable that improves response and modulation

Reach adjust mechanism allows for the lever to be adjusted for any hand size type of riding or individual preference

OT-SP41

See Tech link below for compatibility info