Saint M810/815 (SM-AX80) thru-axle kits are for independently mounted rear derailleurs (only attaches hub to frame dropouts)
Saint M800/801/805/806 thru-bolt kits are designed for the like-model Saint integrated-mount rear derailleur (attaches hub and derailleur to frame with special derailleur interface nut)
Hone M600 uses a solid, threaded hub axle that interfaces with separate derailleur and non-drive axle nuts (derailleur nut supplied with derailleur, or available separate)
Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.
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