Model No. 53727-SEN Punch Set optimized design reduces wrench effort Slugs are split inside for easy removal Maximum capacity of 10 gauge mild steel. Also cuts aluminum, fiberglass & plastic Punches holes cleanly & accurately Set includes 3/4\” (19 mm) punch & die with draw stud Product Description Specs This Punch Set can punch clean & accurate holes in electrical panels. The 3/4\” 3-piece set can punch up to 10-gauge mild steel. It can also cut through aluminum, fiberglass, & plastic. Product Overall Length Conduit Size Model # Klein 3/4\” Knockout Punch Set ~ 53727-SEN 4\” 3/4\” 53727-SEN For California Residents: WARNING: Cancer & Reproductive Harm – www.P65Warnings.ca.gov WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood