GREENLEE, 10 ga Max Sheet Metal Capacity-Steel, Falls Free, Round Knockout Punch Kit - 3UME6|735BB - Grainger
Greenlee® Slug-Buster® 7304 Standard Round Knockout Punch Die Kit, 10 ga Capacity, For Use With Slug-Buster® and Slug-Splitter® SC® (Self-Centering) Standard Round Punch, 2-1/2 to 4 in Conduit/Pipe, Mild Steel | State
Greenlee 7310SB 11-Ton Hydraulic Knockout Punch Kit with Hand Pump and Slug-Buster, 1/2" - 4" - Tap And Die Sets - Amazon.com
7235BB Greenlee Ko Set, SB, 1/2" - 1-1/4"
11-Ton Hydraulic Knockout Kit with Hand Pump and Slug-Buster® 1/2" - 2" | Greenlee
greenlee slug-buster 7646 knockout punch set – ASA College: Florida
Greenlee Punch, Knockout, Round, 3/4 In 730BB-3/4 | Zoro
Greenlee 7506 Slug-Splitter Self Centering Knockout Punch Kit with Hydraulic Ram and Pump - Hand Tool Knockout Punches - Amazon.com
Greenlee Hydraulic Punch Driver Set 1/2 to 4 In. 7310SB from Greenlee - Acme Tools