Chainring Nut Wrench CNW-2
Park Tool Chainring Nut Wrench makes chainring bolt installation and removal easier. If there rusted be sure to use shop rags to protect your knuckles! It securely holds the slotted nut to prevent spinning when tightening or loosening the bolt. And, it's double-ended to fit most slotted-type nuts, including Campagnolo chainring bolt nuts.