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
GREENLEE, 6 Pieces, 10 ga Max Sheet Metal Capacity-Steel, Knockout Punch Driver Set - 5C632|7238SB - Grainger
GREENLEE Hydraulic Knockout Punch Set (NIH571) | Linen Plus
Greenlee 7310 Ram and Hand Pump Hydraulic Driver Kit with 10 Conduit Sized Punches - Tap And Die Sets - Amazon.com
11-Ton Hydraulic Knockout Kit w/ Hand Pump & Standard Round 1/2" - 4" | Greenlee
11-Ton Hydraulic Knockout Kit with Hand Pump and Slug-Buster® 1/2" - 4" | Greenlee