The Current Tools 154PM 1/2"–4" Piece Maker™ Hydraulic Knockout Set is designed to split the slug into two pieces for easy removal, requiring less force than conventional punches. It features high-strength steel punches and dies for long life, a unique hand pump design with a heavy-duty ram, and is capable of punching up to 10 gauge (.134") mild steel. The set includes a metal carrying case for portability and organization.