NS TOOL CO., LTD. is a Japan-based company engaged in the production and sale of end mills for cutting tools. The Company operates in two business segments. The End Mill segment is engaged in the manufacture and sale of cutting tools focusing on carbide small-diameter end mills, including square end mills, ball end mills, taper end mills, taper ball end mills, radius end mills, taper radius end mills, inner radius cutters, micro drills, drills, chucks, as well as cutter series for copper electrode, aluminum and plastic, among others. The Others segment is engaged in the manufacture and sale of plastic moldings focusing on tool cases. As of March 31, 2013, the Company had four consolidated subsidiaries and one unconsolidated subsidiary.