Greenlee K2BBM-0305 30.5 mm Sl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$115.19
Greenlee K2BBM-0305 30.5 mm Slug-Buster Manual Knockout Punch Set

Greenlee K2BBM-0305 30.5 mm Slug-Buster Manual Knockout Punch Set

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Model: K2BBM-0305

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

$115.19
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Greenlee K2BBM-0305 30.5 mm Slug-Buster Manual Knockout Punch Set

The Greenlee K2BBM-0305 is a 30.5 mm Slug-Buster® manual knockout punch set engineered for clean, round knockouts in mild steel, brass, copper, aluminum, fiberglass, and plastics. The punch is manufactured from 10 ga mild steel and is optimized for use in mild steel enclosures, while the punch and die are Made in USA. This set is designed for use with the Greenlee KRW-1 ratchet wrench and replaces the earlier 60246 knockout set, giving electricians a drop-in upgrade with improved features for panel and enclosure fabrication.

Key Features

  • Trade Size: 30.5 mm round knockout, sized for standard conduit and fitting openings.
  • Durable Construction: Punch is 10 ga mild steel, optimized for use in mild steel material for long tool life in demanding shop and field applications.
  • Unique Punch Profile: Splits slugs during punching, allowing the slug to be removed easily without extra tools or steps.
  • Knurled Edge: Improved grip on the punch and die for secure handling during setup and operation.
  • Alignment Markings: Printed directly on the tool to improve punching accuracy and repeatability.
  • Laser Markings: Allow for quick, at-a-glance part identification on the shop floor or truck.
  • Material Versatility: Suitable for use in mild steel, brass, copper, aluminum, fiberglass, and plastics.
  • Direct Replacement: Replaces the Greenlee 60246 knockout set for easy cross-reference and reordering.

Technical Specifications

  • Country of Origin: United States
  • Type: Knockout Set
  • Thickness: Punch 10 ga mild steel
  • Material: For use in mild steel, brass, copper, aluminum, fiberglass and plastics
  • Shape: Round
  • Size: 30.5 mm
  • Capacity: Optimized for use in mild steel

Typical Applications

  • Punching Round Conduit and Fitting Knockouts in Electrical Enclosures
  • Panelboard and Junction Box Fabrication
  • Field Modification of Mild Steel, Brass, Copper, and Aluminum Panels
  • Fiberglass and Plastic Enclosure Modification
  • Use with Greenlee KRW-1 Ratchet Wrench for Manual Knockout Punching

Why Greenlee?

Greenlee's Slug-Buster® knockout punches combine a unique slug-splitting punch profile with knurled grip surfaces and laser and alignment markings so electricians can punch clean, accurate 30.5 mm round openings quickly and repeatably. With a 10 ga mild steel punch and die Made in USA, the K2BBM-0305 is built to deliver dependable, code-compliant results for demanding commercial and industrial panel fabrication work, and it serves as a direct replacement for the Greenlee 60246 set for shops already standardized on Greenlee tooling.

Manufacturer Resources

Product Specs

list_batch:
GREE-20260923
Product Type:
Knockout Set
Configuration:
Round
Country Of Origin:
United States
Department:
Electrical
Product Subgroup:
Knockout Punches
Product Material:
Mild Steel
Product Size:
30.5 mm
Product Group:
Electrical Installation Tools

Greenlee K2BBM-0305 – Frequently Asked Questions

1) Does the Greenlee K2BBM-0305 knockout set come with a driver, or do I need a separate wrench?
The K2BBM-0305 is a manual punch and die set only. It's designed to be driven with the Greenlee KRW-1 ratchet wrench, which is ordered separately. If you're already running a hydraulic or battery driver, this set is not the one to pair with it, it's the manual configuration.
2) I have an old Greenlee 60246 knockout set. Is the K2BBM-0305 the current replacement?
Yes. The K2BBM-0305 replaces the earlier Greenlee 60246 set as a drop-in upgrade, same 30.5 mm round size, with the Slug-Buster punch profile, knurled grip surfaces and alignment markings added. Shops standardized on Greenlee tooling can cross-reference 60246 straight to this part number.
3) What does Slug-Buster actually change on the job compared with a plain knockout punch?
The punch profile splits the slug as it cuts, so the disc comes out in pieces instead of wedging in the die. That means no prying with a screwdriver and no fishing a slug out of a live panel. The knurled edges on punch and die help you hand-tighten the draw stud assembly, and the printed alignment markings let you line the cut up repeatably rather than eyeballing it.
4) Can I use the K2BBM-0305 on a fiberglass or PVC enclosure without cracking it?
Fiberglass and plastic enclosure modification is one of the listed applications for this punch, along with mild steel, brass, copper and aluminum panels. The draw-stud action pulls the cut rather than hammering it, which is why the same set covers both metal and non-metallic boxes. Pilot the hole for the draw stud as you would on steel.
5) Is the Greenlee K2BBM-0305 punch and die made in the USA?
Yes, the punch and die are made in the United States, and country of origin on the set is listed as United States. That matters on public and federally funded work where domestic sourcing is a condition of the contract.
6) What's the exact part number to order this 30.5 mm Greenlee knockout set?
Order Greenlee K2BBM-0305. That is the single model on the set, a 30.5 mm round Slug-Buster manual punch and die. The tool also carries laser markings so the part can be identified at a glance in the truck or on the bench once it's out of the box.
How fast can I get the Greenlee K2BBM-0305 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 K2BBM-0305 come with a warranty?
Absolutely. The Greenlee K2BBM-0305 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 K2BBM-0305?
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 K2BBM-0305 from ZenSupply?
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