Super B TB-6715 Chainring Nut Wrench 9mm/10mm

The SB6715 is used to tighten or loosen chainring nuts and securely hold the slotted nut to prevent spinning.

Double-ended to fit most slotted-type nuts, the other side is the tool to remove the dust cap out of the cranks, using a hex key you can easily install/remove the chainring bolts.