The HCA20 Wire and Cable Cutter is an air-operated unit that quickly cuts materials from 0.010" to 1.25" OD (0.254mmø to 31.75mmø) including non-ferrous conductors such as copper and aluminum. This compact, easy-to-use unit employs a guillotine-style blade to provide clean, square cutting. The dual-activation buttons ensure operator safety during the cutting cycle.• Maximum blade opening : 1.25" diameter (31.75mmø) • Minimum material size :.010" diameter (.0254mmø) • Power :Air operated; 115V 60Hz