Die only, punch and draw stud needed to complete. Greenlee Slug-Splitter SC heavy-duty punches are designed to punch up through 10 gauge (3.5 mm) stainless steel. Unique slug-splitting design and tool steel construction easily punch 10 gauge (3.5 mm) mild steel and stainless steel. The self-centering punch aligns itself on pilot hole. No need to draw crosshairs or line up die alignment marks. The unique punch profile also splits slugs for easier slug removal. The dies and stainless steel draw studs are heavy duty for longer life. They have excellent abrasion resistance for punching fiberglass and plastic. Slug-Splitter SCpunches need a punch, die, and draw stud to operate.