Bolt Replacement Kit - 
This kit includes: 

• X1 Seat Post Bolt
• X4 Swing Arm Washers
• X4 M5 Size Swing Arm Dome Nuts

This only has size M5 nuts ( spanner size 8mm).

For M6, these can be found at your local hardware store.

SKU: KRS-SB-BOLT-ASS-01