Southwire Max Punch XD Knockout 1/2 in. -2 in. Stainless Steel Rated Dies Set 19-Pieces 63159901 - The Home Depot
Southwire MPXD-SD Max Punch XD Cordless Drill Knockout Tool
Gardner Bender Slug-Out Knockout Set for 2-1/2 inch (6.35 cm) Conduit, Includes Punch, Die, and Drive Screw in the Knockout Punch Sets department at Lowes.com
Southwire Max Punch XD Knockout 1/2 in. -2 in. Stainless Steel Rated Dies Set 19-Pieces 63159901 - The Home Depot