Greenlee 7235BB Slug-Buster Ma...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$327.92
Greenlee 7235BB Slug-Buster Manual Knockout Set, 1-1/2" - 2"

Greenlee 7235BB Slug-Buster Manual Knockout Set, 1-1/2" - 2"

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Model: 7235BB

In Stock (leaves warehouse same day if ordered before 3pm ET)

$327.92
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Greenlee 7235BB Slug-Buster® Manual Knockout Set, 1-1/2" - 2"

The Greenlee 7235BB Slug-Buster® Manual Knockout Set is a professional-grade punch kit built for punching clean, round holes in mild steel, aluminum, brass, copper, fiberglass, and plastics. This set covers 1-1/2" - 2" conduit size knockouts (hole size 0.89" - 2.42" or 22.5 mm - 61.5 mm) and is rated to punch up to 10 ga mild steel. Made in the USA, the punches, dies, and carrying case are engineered for electricians and panel fabricators who need dependable, repeatable knockouts on the job site.

Key Features

  • Trade Size: 1-1/2" - 2" conduit size dies for standard electrical box and enclosure knockouts.
  • Hole Size Range: Punches holes from 0.89" - 2.42" (22.5 mm - 61.5 mm) for standard fitting and connector openings.
  • Slug-Buster® Punch Profile: Splits slugs for fast, easy slug removal after punching, reducing cleanup time on the job.
  • Durable Construction: Punches, dies, and case are manufactured in the USA and rated to punch up to 10 ga mild steel, standing up to repeated field use.
  • Ball-Bearing Draw Studs: Includes both a 7/16" and a 3/4" ball-bearing draw stud for smooth, low-friction operation during punching.
  • Easy Threading: Draw studs feature a "dog point" tip that helps eliminate cross-threading during setup, saving time on installation.
  • Precision Alignment: Laser markings allow quick part identification while alignment markings improve punching accuracy for cleaner holes.
  • Ergonomic Grip: Knurled edge on punches provides a better grip for controlled operation in tight or awkward panel spaces.
  • Ratchet Wrench Compatible: Works with the Greenlee KRW-1 high-leverage ratchet wrench for driving punches with less effort.

Technical Specifications

  • Country of Origin: United States
  • Type: Manual Knockout Set
  • Consists Of: 1-1/2" - 2" conduit size Slug-Buster® punches
  • Material Capacity: Punches up to 10 ga mild steel
  • Size: 1-1/2" - 2" conduit size knockouts (hole size 0.89" - 2.42" or 22.5 mm - 61.5 mm)
  • Shape: Round
  • Case: Includes KCC-BB2 carrying case for organized storage and transport

Typical Applications

  • Punching Round Knockouts in Electrical Enclosures and Panels
  • Fabricating Holes in Mild Steel, Aluminum, Brass, and Copper
  • Cutting Openings in Fiberglass and Plastic Enclosures
  • Electrical Panel and Switchgear Modification
  • Field Installation of Conduit Fittings and Connectors

Why Greenlee?

Greenlee's Slug-Buster® 7235BB knockout set is engineered and manufactured in the USA, pairing hardened punches and dies with a proven slug-splitting punch profile that simplifies cleanup on every hole. The dog-point draw studs, knurled grip surfaces, and laser-etched alignment markings reflect the kind of durable, precision-focused construction electrical professionals rely on for consistent, code-compliant panel work, backed by the included KCC-BB2 carrying case for organized jobsite transport and easy identification of individual punches and dies within a larger tool set.

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Manufacturer Resources

Spec Sheet

Product Specs

Department:
Electrical
Product Type:
Knockout Set
Product Subgroup:
Knockout Punches
Product Material:
Punch Up To 10 Ga Mild Steel
Country Of Origin:
United States
Product Group:
Electrical Installation Tools

Greenlee 7235BB – Frequently Asked Questions

1) What hole sizes does the Greenlee 7235BB Slug-Buster knockout set punch?
The Slug-Buster set covers 1-1/2 inch to 2 inch conduit size knockouts, which works out to actual hole diameters of 0.89 inch to 2.42 inch (22.5 mm to 61.5 mm). All holes are round. If you need the smaller conduit range, the set is also offered in a 1/2 inch to 1-1/4 inch configuration under part number 7235BB.
2) How thick a panel can a Greenlee Slug-Buster manual knockout punch handle?
Rated to punch up to 10 gauge mild steel. It also cuts aluminum, brass, copper, fiberglass, and plastics, so it handles typical enclosure and panel gauges. Anything heavier than 10 ga mild steel is outside what these punches are rated for.
3) Do I need a hydraulic ram to use this knockout set, or is it hand driven?
It's a manual set. You thread a draw stud through a pilot hole and drive the punch with a wrench. Both a 7/16 inch and a 3/4 inch ball-bearing draw stud are included, and the set works with the Greenlee KRW-1 high-leverage ratchet wrench if you want to cut down the effort on larger holes.
4) Which conduit size range should I order, the 1/2 to 1-1/4 inch or the 1-1/2 to 2 inch set?
Pick by the conduit you're terminating. The 1/2 inch to 1-1/4 inch set (MPN 7235BB) covers the small branch-circuit connector openings you hit most often in device boxes and small enclosures. The 1-1/2 inch to 2 inch set (MPN 7237BB) covers the larger feeder and service fittings, punching 0.89 inch up to 2.42 inch holes. They do not overlap, so panel shops working both ends of the range usually carry both.
5) What comes in the box with the Greenlee 7235BB Slug-Buster set?
You get the conduit-size Slug-Buster punches and dies for the range on the set, both draw studs (7/16 inch and 3/4 inch, ball bearing), and the KCC-BB2 carrying case. The KRW-1 ratchet wrench is compatible but is a separate purchase.
6) What does Slug-Buster actually do differently from a standard knockout punch?
The Slug-Buster punch profile splits the slug as it cuts instead of leaving one solid disc. The pieces drop free rather than wedging in the die, so you spend less time prying slugs out between holes. It's the main reason electricians choose this profile for repetitive panel work.
7) Will the draw studs cross-thread when I'm working overhead in a panel?
The draw studs use a dog-point tip specifically to prevent cross-threading when you start them, which helps when you can't see the threads in a tight or overhead enclosure. The punches also have a knurled edge for grip in awkward spaces, and laser alignment markings so you can line the punch up to your layout mark without guessing.
8) Is the Greenlee Slug-Buster knockout set made in the USA?
Yes. The punches, dies, and the carrying case are all manufactured in the United States, which matters if you're buying against a domestic-content requirement on a government or institutional job.
How fast can I get the Greenlee 7235BB delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Greenlee 7235BB come with a warranty?
Absolutely. The Greenlee 7235BB is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Greenlee 7235BB?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Greenlee 7235BB from ZenSupply?
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