With a solid lever throw and crisp engagement, responsive shifting is just a click away. microSHIFT Estes right thumb tap shifters are designed with a precision and durability not usually seen in entry level shifters. And the fact that they're compatible with standard Shimano rear derailleurs makes them an easy path to upgrade. Compatible with Shimano MTB 8-speed rear derailleurs Gear indicator window displays current gear choice for easy identification Upgraded mechanism durability provides three times longer service life 11% lighter shifting force than previous generation Updated composite construction for stiffer, more responsive thumb levers Specifications Rear Der/Shifter Compatibility Shimano Mountain Drivetrain Speeds 8 Shifter Style Thumb Color Black