Eclipse Tools Manual Knockout Quick Punch Kit 902-481 - The Home Depot
iGeelee Ratchet Knockout Hole Punch Driver Kits 1/2 to 2 inch SLUG-Buster Knockout Electrical Conduit Hole Cutter Sets KO Tool Kit (CC-60) : Amazon.ca: Tools & Home Improvement
Greenlee Slug-Buster 7238SB Manual Knockout Punch Die Kit, 10 ga Capacity, For Use With Battery Powered/Hydraulic Ratchet Driver and 3/8 in and 3/4 in Draw Stud, 1/2 to 2 in Conduit/Pipe, Mild Steel
Yescom 10 Ton Hydraulic Punch Driver Kit Manual Hole Knockout Puncher Tool w/ 6 Dies : Amazon.ca: Tools & Home Improvement