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
How To Use A Hydraulic Knock Out Tool - YouTube
Hydraulic Knockout Punch Set, SC | Greenlee
KNOCK OUT SET RENTAL, HYDRAULIC, UP TO 2 INCH - (GREENLEE 7306SB) — Metro Systems