that's a silly pic, those look like a set of 75's and the rear bolts have teeth so it bites into the back of the crank arm, therefore does not need a tool to tighten/remove.
but, that is the proper tool for the job.
@31trum started
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that's a silly pic, those look like a set of 75's and the rear bolts have teeth so it bites into the back of the crank arm, therefore does not need a tool to tighten/remove.
but, that is the proper tool for the job.