Hold up to 6 chisels for an air hammer. The two slots allow you to get even wide chisels in and out. It can also hold medium to large screwdrivers, but only about two per side in that case. Small screwdrivers don't fit well since it's primarily designed for the chisels. 6 mounting screws is maybe overkill, so that's up to you.
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The author marked this model as their own original creation.