Greenlee Slug-Buster 1/2" Roun...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$110.19
$41.20
Greenlee 721-1/2 1/2" Conduit Size Round Slug-Buster Punch

Greenlee Slug-Buster 1/2" Round Conduit Replacement Punch Unit for Hydraulic and Battery-Powered Drivers

(No reviews yet) Write a Review

Model: 721-1/2
Selected Model is

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

$110.19
$41.20
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Greenlee Slug-Buster 1/2" Round Conduit Replacement Punch Unit

Professional Replacement Punch for Battery-Powered, Hydraulic and Ratchet Drivers

The Greenlee Slug-Buster 1/2" Round Conduit Replacement Punch Unit delivers reliable performance for professional electrical installations. This Made in USA replacement punch unit is designed for compatibility with battery-powered, hydraulic and ratchet drivers, providing versatile punching capability for 1/2" conduit applications. The unit features alignment markings for improved accuracy and catalog number identification for quick part recognition.

Professional Features & Benefits

  • 1/2" Conduit Size Capacity: Precisely engineered for standard 1/2" (22.5 mm) conduit punching applications with consistent results.
  • Multi-Driver Compatibility: Works seamlessly with battery-powered, hydraulic and ratchet drivers for flexible installation options.
  • Alignment Markings: Integrated markings improve punching accuracy and boost productivity when making precise holes.
  • Catalog Number Identification: Punches and dies are clearly marked with catalog numbers and sizes for quick part identification and inventory management.
  • Made in USA Quality: Manufactured domestically ensuring reliable construction and consistent performance standards.
  • Round Slug-Buster Design: Engineered replacement punch unit specifically designed for professional electrical conduit installation work.

Technical Specifications

  • Product Shape: Round
  • Product Size: 1/2 In
  • Product Type: Slug-Buster� Replacement Punch

Installation & Operation

  1. Mount the replacement punch unit in the compatible battery-powered, hydraulic or ratchet driver system following manufacturer guidelines.
  2. Position the workpiece securely and align using the integrated alignment markings for accurate hole placement.
  3. Engage the driver system according to the provided operating specifications and compatible capacity requirements.
  4. Complete the punching operation ensuring proper clearance and access for the 1/2" conduit size application.
  5. Verify punch performance and hole quality before proceeding with conduit installation work.
  6. Follow ongoing maintenance practices appropriate to the driver system and replacement punch components.

Professional Applications

  • Electrical Panel and Enclosure Installation
  • Commercial Conduit Systems
  • Industrial Electrical Infrastructure
  • Residential Electrical Service Upgrades
  • Maintenance and Repair Operations
  • Professional Electrical Contracting

Why Choose Greenlee Quality?

Greenlee Slug-Buster replacement punch units deliver professional-grade reliability with Made in USA manufacturing standards. The clear catalog number marking system and alignment features ensure consistent performance and efficient workflow for electrical professionals requiring dependable conduit punching solutions.

Manufacturer Resources

Product Specs

Product Shape:
Round
Product Size:
1/2 In
Product Type:
Knockout Punch
Department:
Electrical
Product Subgroup:
Knockout Punches
Product Group:
Electrical Installation Tools

Greenlee 721-1/2 – Frequently Asked Questions

1) Will the 721-1/2 punch work with my battery-powered knockout driver, or is it hydraulic only?
Both. The 721-1/2 replacement punch unit is made to run on battery-powered, hydraulic, and ratchet drivers, so an electrician carrying a cordless knockout tool and a shop with a hand-pump hydraulic set can use the same punch and die.
2) Is the Greenlee 721-1/2 a complete knockout set or just the replacement punch?
It is a replacement punch unit, not a full knockout kit. You order it to replace a worn or missing 1/2 inch round punch and die in a driver set you already own. If you have no driver, the punch alone will not cut anything, you still need a battery, hydraulic, or ratchet driver to drive it.
3) What is the Greenlee part number for the 1/2 inch round Slug-Buster punch?
Order it as Greenlee 721-1/2. That is the manufacturer part number for the 1/2 inch round Slug-Buster replacement punch unit, and it is the same number stamped on the punch and die.
4) How do I know I am grabbing the right punch out of the case on the job?
Greenlee marks the punch and die with the catalog number and size, so the 721-1/2 reads its own identity on the tool rather than relying on a label in the case. It also carries alignment markings on the body to line the punch up with your layout mark before you draw it through the pilot hole.
5) Where is the Greenlee 721-1/2 punch made?
Made in USA. For MRO and government buyers tracking domestic sourcing on tool purchases, the 721-1/2 Slug-Buster punch unit is manufactured domestically.
6) Can I use this punch on an electrical enclosure or is it just for panel walls?
The 1/2 inch round Slug-Buster is used for panel and enclosure work, commercial conduit systems, industrial infrastructure, residential service upgrades, and general MRO repair. Any of those where you need a clean 1/2 inch conduit entry driven with a compatible knockout driver.
How fast can I get the Greenlee 721-1/2 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 721-1/2 come with a warranty?
Absolutely. The Greenlee 721-1/2 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 721-1/2?
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 721-1/2 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!