Can be used with any hydraulic punching tool (check the threading) or even manual by adding a bolt.
Greenlee Round standard knockout punch unit is used to create 3/4-Inch diameter hole through sheet metal. It is designed to punch through 14 gauge mild steel, aluminium, fiberglass and plastic. Punch unit works using battery-power, hydraulic, ratchet or manual drivers. It uses standard greenlee punch, dies and draw studs all assembled easily through pilot holes.
Greenlee 730BB-3/4 Punch,Knockout,Round,3/4 in
Control Panel Supply Alfra Square Punch and Die Set
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Double D Punch Die Set 0.769 inch x 0.642 inch Knockout Hole w/ Case - TEMCo Industrial
Square - Rectangular Knockout Punches, Icotek
The 7/8-Inch Knockout Die easily punches holes for 1/2-Inch EMT conduit. The optimized design reduces wrench effort. Slugs are split inside for easy removal. Cuts aluminum, fiberglass and plastic as well.
Klein Tools 53868 2.416 Knockout Die, 2 Conduit
Can be used with any hydraulic punching tool (check the threading) or even manual by adding a bolt.
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GN 123 Steel Sheet Metal Punches, for Cam Latches / Cam Locks
The Greenlee 60019 Square Punch Unit (1.81) is part of Greenlee's premium collection of tools and accessories. This square punch assembly includes: a (60020) punch, a (60021) die, (60118) draw studs, and (60235) counter nuts.
Greenlee 60019 Punch,Square
FORCE LOGIC Knockout Tools, Tool Sets and EXACT Dies
Knockout punch - Wikipedia
KIT KNOCKOUT IDRAULICO 15T 16-101 mm punzone foro lamiera idraulica EUR 186,16 - PicClick IT
cnc turret punch press tooling knockout