Rd-tz31-a Rear Derailleur 6 or 7 Speed Mtb Bicycle Derailleur Drivetrain Direct Mount or bolt Mounta MODELRD-TZ31-A bicycle rear derailleur, Compatible with 6 or 7-speed SIS index shift drivetrains. IMPORTANTMountain bike rear derailleur, it This is a mountain bike direct mount rear derailleur, no hook mount. EXCELLENT PERFORMANCEPrecise gears provide light and stable shifting performance and make riding easy and comfortable. MATERIALMade from high quality steel material, durable and long lasting. Easy to install and disassemble. APPLICATIONSuitable for mountain bikes, road bikes, variable speed bikes, folding bikes and city bikes. It is your must-have bicycle accessory on your cycling trip. Please note that due to manual measurement and display differences, there may be slight differences between individual products and the pictures. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store