a special wrench which holds all the six surface of bolts to secure the grip, and also adjustable to suite 14 different sizes.
Bionicwrench
It is adjustable and holds all the six surface of bolts to ensure it won't slip or damage the bolts. Looks it does adjust linearly so it won't matter inch or centimeter either. A convenient quick tool for HONDA and Harley in one!
Bionicwrench | Can you grip more tightly?
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