- Uses 2 hex wrenches to tighten or loosen bolt/nut
- Aluminum kit: (5) 5mm-broach bolts, (5) 6mm-broach nuts, and (5) inner bolts
- Steel kit only for middle/outer rings and includes washers: no inner bolts
- Available in either aluminum or steel for 4-arm and 5-arm cranks: road and mountain
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