Birzman Chainring II Nut Wrench
The Birzman Chainring Nut Wrench made of high-quality tool steel is a practical tool for repair or maintenance works on your drivetrain. Compatible with most slotted chainring bolts, this tool helps you hold the screw insert. In addition, the wrench features a 2-pin tool for the installation/removal of integrated crank pullers as well as 2 hex key wrenches in 9 mm and 10 mm.
For common slotted chainring nuts
9 mm and 10 mm hex wrenches
2-pin tool for installation/removal of commonly integrated crank pullers