Greenlee Manual Knockout Kit 1/2"-2" Conduit Size Slug-Buster Punch & Die Set with High-Leverage Ratchet Wrench
Professional Knockout Solution for Electrical Conduit Installation
The Greenlee Manual Knockout Kit delivers reliable performance for punching clean holes in mild steel, aluminum, brass, copper, fiberglass and plastics. This comprehensive set features Slug-Buster punch profile technology that splits slugs for easy removal, covering 1/2" to 2" conduit sizes with precision laser markings and alignment guides for improved accuracy. The included high-leverage ratchet wrench with five-degree ratcheting mechanism provides efficient operation for professional electrical installations.
Professional Features & Benefits
- 1/2" - 2" Conduit Size Range: Covers standard electrical conduit knockout requirements from 0.89" to 2.42" hole sizes for versatile installation applications.
- Slug-Buster Punch Profile: Splits slugs during punching operation for easy slug removal, reducing cleanup time and improving workflow efficiency.
- High-Leverage Ratchet Wrench: Five-degree ratcheting mechanism provides smooth operation and reduced effort for consistent hole punching performance.
- Draw Stud Design: "Dog point" tip helps eliminate cross-threading during assembly, ensuring reliable connections and extended tool life.
- Laser Markings: Quick part identification and alignment markings improve accuracy and reduce setup time for professional installations.
- Knurled Punch Edges: Enhanced grip surface provides better control and handling during operation for improved safety and precision.
- Material Compatibility: Punches up to 10 gauge mild steel plus aluminum, brass, copper, fiberglass and plastics for diverse electrical applications.
Technical Specifications
- Consists Of: KRW-1 High-leverage ratchet wrench
- Country Of Origin: United States
- Product Material: Punch up to 10 ga mild steel
- Product Shape: Round
- Product Size: 1/2" - 2" conduit size knockouts (hole size - 0.89" - 2.42" or 22.5 mm - 61.5 mm)
- Product Type: Manual Knockout Kit
Professional Applications
- Electrical Panel Installation
- Commercial Electrical Systems
- Industrial Conduit Installation
- Maintenance and Repair Operations
- Professional Electrical Contracting
- Facility Electrical Upgrades
Why Choose Greenlee Quality?
Greenlee delivers professional-grade knockout tools manufactured in the United States with precision laser markings and durable construction. The comprehensive kit includes carrying case and high-leverage ratchet wrench for complete installation capability, ensuring reliable performance for demanding electrical applications.
Manufacturer Resources
Spec Sheet
Product Specs
- Consists Of:
- KRW-1 High-leverage ratchet wrench
- Country Of Origin:
- United States
- Product Material:
- Punch up to 10 ga mild steel
- Product Shape:
- Round
- Product Type:
- Manual Knockout Kit
- Department:
- Electrical
- Product Subgroup:
- Knockout Punches
Greenlee 7238SB – Frequently Asked Questions
1) How thick a steel enclosure can this manual knockout punch go through?
Rated for mild steel up to 10 gauge. It also punches aluminum, brass, copper, fiberglass and plastics, so it handles typical panel cans, wireway and junction boxes. Thicker than 10 gauge mild steel is outside what this punch is rated for, and stainless is not among the listed materials.
2) Do I need a hydraulic driver, or is this kit ready to punch out of the case?
No separate driver needed. The kit is manual and ships with the KRW-1 high-leverage ratchet wrench, which has a five-degree ratcheting action so you can work in tight panel spaces without a full swing. You supply the pilot hole with a drill; from there the draw stud, punch, die and wrench do the work.
3) What is a Slug-Buster punch and does it actually make slug removal easier?
The Slug-Buster profile splits the slug as the punch pulls through instead of leaving one solid disc, so the pieces drop out rather than wedging in the die. On a panel job with a dozen knockouts that is real cleanup time saved, and it is the main difference between this and a plain round punch profile.
4) Will this punch round holes only, or can it do square and D-shaped knockouts?
Round only. The 7238SB punches and dies are round profile, sized to conduit knockouts. Square, rectangular or D-shaped openings for pushbuttons and pilot devices need a dedicated square punch set, not this one.
5) Why does the draw stud have a dog point tip?
The dog point on the draw stud is an unthreaded lead that starts the stud into the punch straight, which keeps you from cross-threading it under load. Cross-threaded studs are the usual way these sets get destroyed, so it matters on a tool that sees daily use.
6) Is the Greenlee 7238SB made in the USA, and does it come with a case?
Manufactured in the United States, and the punches, dies, draw studs and the KRW-1 ratchet wrench come in a carrying case. For procurement offices with domestic-sourcing requirements on MRO tooling, the country of origin is United States.
7) How do I make sure the knockout lands square on the panel?
Each punch carries laser markings for part ID plus alignment marks, so you can line the punch up to your layout line before drawing it through instead of eyeballing it. Knurled edges on the punch give you grip to hold that alignment while you snug the draw stud.
How fast can I get the Greenlee 7238SB 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 7238SB come with a warranty?
Absolutely. The Greenlee 7238SB 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 7238SB?
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 7238SB 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.