These replacement parts and accessories restore or improve the function of indexable cutting tools to avoid the expense of replacing the entire toolholder. Boring bar set pins and screws fasten indexable inserts to the insert seat and toolholder. Carbide insert storage products hold carbide inserts to keep them organized and help protect them from damage and loss. Drivers and wrenches tighten and loosen fasteners that secure inserts and other cutting tool components. Insert clamps form a flange that locks inserts in place on indexable boring bar toolholders. Shim seats for indexable cutting tools fit between the cutting insert and the toolholder body to prevent wear on the toolholder. Fasteners for indexable cutting tools replace worn or missing fasteners to avoid the expense of replacing the entire toolholder.