Shimano ZEE SL-M640 Right ShifterDyna-Sys compatible for easy set-up and accurate low effort shiftingRight side onlyNew paddle shapes with 2-way release and dimpled main lever TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Color Black Rear Der/Shifter Compatibility Shimano Mountain Drivetrain Speeds 10 Weight 127 Shifter Style Trigger