bicycle brake aerodynamics-BIKEHAND Bike Bicycle Crank Chainring Slotted Type Nut Wrench Spanner Installation and Removal Tool Includes 9mm/10mm Bolt Wrench - Great for Holding the Slotted Nut to Prevent Spinning

Standard Standard
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COMPATIBILITY: Compatible with most brands of chainring nuts, includes 9mm and 10mm bolt wrenches. It can be also used to remove the dust cap out of the cranks. For models such as FC-7400 FC-7700 and FC-7900 those old Shimano models cranks.
CONVENIENT TO USE: Double-ended economical chainring nut wrench is used to tighten or loosen chainring nuts and securely holds the slotted nut to prevent spinning.
PERFECT TO FIT: The wrench is manufactured by high-precision process to ensure that the size is fully fitted to the bolt.
DURABLE & COMFORTABLE: Heat-treated high-quality steel constructed for long time using. Handle part is wrapped by rubber to improve the user comfort.