Shimano AX56A 12x142mm Rear Quick Release

• 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 separately)