Tempo Greenlee 737BB Knockout Punch Kit, 1-1/2-Inch and 2-Inch Conduit Size : Amazon.ca: Tools & Home Improvement
GREENLEE, 6 Pieces, 10 ga Max Sheet Metal Capacity-Steel, Knockout Punch Driver Set - 5C632|7238SB - Grainger
Greenlee Hydraulic Punch Set, 1/2 in - 4 in. | Aztec Rental Services
GREENLEE, Hydraulic Punch Driver Set - 5C633|7306SB - Grainger
Knockouts | Greenlee
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