From Bike Parts:Park Tool CNW-2 Chainring Nut wrench
Was this useful? Yes | No From Nashbar:The CNW-2 makes chainring bolt set installation and removal easy. It securely holds the slotted nut to prevent spinning when tightening or loosening the bolt. Double-ended to fit most slotted-type nuts, including the Campagnolo chainring nuts.
Was this useful? Yes | No From Jenson USA:This handy tool fits securely into the slots on the reverse side of a chainring bolt so it doesn't spin while you loosen the bolt. Designed specifically for the job, the revised CNW-2 (replaces CNW-1) makes removing chainring bolts much easier.
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