Professional tool for quick and simple exchange of chain rings. The crank can stay assembled on the frame. On one side there is a guide for hexagon wrench (diameter 7mm), on the other side there is a drive for different bits, depending on the standard you want tork with.

Place the pliers on one of the chain ring bolts. Press the pliers and ensure the correct seating of the bit notches in the nut. Now put the hexagon/torx wrench through the guide and unscrew the chain ring bolt, while holding the pliers pressed. Repeat for all remaining bolts.