The Gear Punch is the first gear driven knockout tool to feature a 7/16 quick change hex that allow users to cut down on installation time and increase jobsite efficiency. Lightweight and durable, the Gear Punch Tool is capable of cutting through 10 gauge mild steel and 10 gauge stainless steel. This compact, durable kit includes 1/2'' through 4-1/2'' cups and dies and the Punch Tool Layout Guide for precise centering and measuring. An easy grip, eronomic handle provides the user a strong base while the drill draws the cup and die together for a clean cut hole.