GREENLEE Knockout Punch Set: 10 ga Sheet Metal Capacity (Steel), 4 1/64 in Nominal Size
The GREENLEE Knockout Punch Set (MPN K3BB-3-1/2) is a Greenlee Knockout Punches & Dies product designed for 10 ga sheet metal capacity in steel. It has a 4 1/64 in nominal size, round shape, and includes a 2 in…
SKU 3G-OTH-291594
Need installation or engineering help?
Ask a question
Product Description
The GREENLEE Knockout Punch Set (MPN K3BB-3-1/2) is a Greenlee Knockout Punches & Dies product designed for 10 ga sheet metal capacity in steel. It has a 4 1/64 in nominal size, round shape, and includes a 2 in wrench. The set is made of plastic and is a GREENLEE brand item.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the GREENLEE Knockout Punch Set K3BB-3-1/2 used for?
The GREENLEE K3BB-3-1/2 knockout punch set is used to create clean, round holes in 10 ga steel sheet metal for electrical enclosures, panel boxes, and junction boxes. It is a manual tool that punches a 4 1/64 in diameter hole, enabling conduit or cable entry without metal shavings.
What are the specifications of the GREENLEE K3BB-3-1/2 knockout punch set?
The GREENLEE K3BB-3-1/2 set has a nominal size of 4 1/64 in, round shape, and a 10 ga steel sheet metal capacity. It includes a 2 in wrench and is made of plastic. The manufacturer part number is K3BB-3-1/2. It is designed for manual operation in electrical and industrial applications.
Where to buy the GREENLEE K3BB-3-1/2 knockout punch set worldwide?
You can source the GREENLEE K3BB-3-1/2 knockout punch set from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time on this Greenlee tool.
How to use the GREENLEE knockout punch set for 10 ga steel?
To use the GREENLEE K3BB-3-1/2 set, drill a pilot hole in the 10 ga steel, insert the punch and die from opposite sides, and tighten the included 2 in wrench to draw the punch through the metal. Always wear safety glasses and lubricate the cutting edge for cleaner results.
Used in
Common applications for GREENLEEGREENLEE Products
3G Electric supplies GREENLEE greenlee knockout punches & dies. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









