xt derailleur on off switch

What is this switch on my Derailleur? I just noticed it on my Canyon Spectral and it can be put
What is this switch on my Derailleur? I just noticed it on my Canyon Spectral and it can be put DIYARTS TX30-6 Bicycle Shifter Mountain Bike Transmission 6-Speed 18-Speed Universal Hand Switch LTWOO-12-Speed-AX-MTB-Trigger-Shifter-Rear-Derailleur-X12-Chain-12V-11-46T-50T-52T.jpg Ltwoo Ax12 Mtb 12 Speed Trigger Shifter Rear Derailleur Group Set For Xt K7 Mountain Bike XShifter brings wireless electronic shifting to any bike, any derailleur - Bikerumor SHIMANO ULTEGRA DI2 SW R671 Shifting switch 2*11S bicycle bike shifters R671 TT remote triathlon LTWOO-AX-1x11-Speed-Trigger-Shifter-Rear-Derailleurs-11s-for-MTB-Compatible-with-52TCassette.jpg Make Di2 Rear Derailleur better for off-road - Coyotes Bike Club Shimano Deore XT SW-M8150-R Shift Switch (Right) (Clamp Mount) (11/12 Speed) - Performance Bicycle Shimano XT M8050 Di2 Shift Switch - 11 Speed | Merlin Cycles How to: Modify Shimano Left Shifters For Use as Dropper Post Switches - Mountain Biking Videos Dérailleur XT Direct Mount XT 12 Speed Rear Derailleur, Sports Equipment, Bicycles & Parts, Parts & Accessories on Carousell Universal Cycles -- Shimano Derailleur Switch Lever/Fixing Plate [Y3FA98040, Y5RT98030 LTWOO-9V-10V-11V-12-Speed-Derailleurs-Trigger-Groupset-A7-AX-AT11-AT12-Shifter-1x10S-Switches.jpg Electric Bike Twist Throttle Forward & Reverse Switch Accelerator 22mm – TDRMOTO Shimano Deore XT RD-M8100 rear derailleur How to: Modify SRAM Left Shifters For Use as Dropper Post Switches - Mountain Biking Videos LTWOO A5 1X9 9 Speed Derailleurs Trigger Groupset 9s 9v Shifter Lever 9 Speed Rear Derailleur Ltwoo Ax12 Trigger Shifter + Rear Derailleur 12s Mtb Bicycle Bike Shifter Compatible Sram Nx Gx Bike-Derailleurs-3x7-21-Speed-Switch-MTB-Bicycle-Shifter-Levers-Brake-with-Shift-Cable-Cycling 9 Reasons Why Your Bike Chain Keeps Falling Off & How To Fix derailleur for bike OFF 74% xt derailleur on off switchDiscover cheap clothes, shoes and accessories at Our shop Outlet. Shop the latest collection at cheap prices.