





⚡ Master every knockout with precision and power — don’t get left behind!
The Greenlee 7238SB Slug-Buster Knockout Punch Kit is a professional-grade electrical conduit hole cutter designed for precision and durability. It punches clean holes from 1/2" to 2" in up to 10-gauge mild steel, aluminum, brass, copper, fiberglass, and plastics. Featuring a high-leverage 1" hex ratchet wrench with a 5-degree ratcheting mechanism and an ergonomic punch profile that splits slugs for easy removal, this kit eliminates cross-threading with dog point tip draw studs. Packaged in a rugged carrying case, it’s the trusted choice for electricians and contractors who demand speed, accuracy, and reliability on the job.































| ASIN | B000LDGN5C |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #107,181 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #20 in Punchdown Tools |
| Brand | Greenlee |
| Color | Green |
| Customer Reviews | 4.6 4.6 out of 5 stars (343) |
| Date First Available | August 17, 2005 |
| Finish | Powder Coated |
| Global Trade Identification Number | 00783310347576 |
| Head Style | Hex |
| Included Components | Tools & Accessories |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 8.56 pounds |
| Item model number | 7238SB |
| Manufacturer | Greenlee |
| Material | Low Carbon Steel |
| Measurement System | Inch |
| Operation Mode | Mechanical |
| Part Number | 50347578 |
| Power Source | Hand_powered |
| Product Dimensions | 16 x 9.7 x 3.5 inches |
| Size | 1/2" - 2" |
| Style | Ratchet Knockout Kit with Slug-Buster |
| UPC | 022228500919 783310347576 640026833482 636123679696 646444617024 013227064373 735090688783 784497256477 756655859974 013147032339 |
| Warranty Description | Goods manufactured by Greenlee will be free from defects in workmanship and material for a period of one year from the date of user purchase, provided such goods are installed, operated, used and maintained in accordance with Greenlee's written instructions. |
| pin hole diameter | 0.89 Inches |
J**L
Great Tool
Works Great!!!!
M**K
Solid product, good price
I always know when I buy a GreenLee product that it's money well spent. This punch set is no exception. Being from Canada and always seeing this set normally cost around $550 CAD, I jumped on getting this when I saw it for only $300 USD on Amazon.com while I was in the US. I've only used it for 1/2" punches so far and it works like a charm. It leaves a VERY clean hole without any burs or shards that are usually left from a hole saw or stepper bit. The hole is also perfectly sized for the L16 or conduit nipple to fit into. In order to make the initial hole, I recommend that you do have a stepper bit so you can enlarge your initial pilot hole up to the size required to get the bolt through.
M**A
Great
I carry the 3/4 and 1" mostly in my bag, with the equivalent size Knipex Pliers Wrench to the ratchet. The pliers wrench is better because it doesn't slip off and has the same leverage / speed. If you're doing home runs or panel work then these make light / quick work of making holes when company hydraulic knockouts aren't nearby. I keep the case and the larger knockouts in my car because I don't frequently use them. If I had known about how much better this makes life, I would have just bought the knockouts sooner. An old man on site users an impact and a 1" socket to twist these in boxes. I'm not that brave, but it seems to still be sharp years later and still takes it. This is a high quality / durable tool, and is known from the guys in the trades. That's why I went with this over Klein or Harbor Freight.
D**.
Great way to cut holes in steel boxes
I've been using a hand greenly knockout kit for the longest time this has saved so much time and my knuckles on smaller boxes and allows me to punch then metal that's behind wire mode boxes to enlarge the half inch holes to 3/4 without the forming the plate
M**O
You get what you pay for.
This is my second Greenlee knockout kit. The first one was purchased probably a decade ago, and is still going strong. It was the smaller set that stops at 1-1/4. I needed a larger set, so I ordered this one. The ratcheting handle beats my old method of a ratchet and socket, as it sits closer to the work and rolls off less. These are far better made than the Chinese knock-offs, like the ones HFT sells. If you only need a hole or two, buy the cheap ones. If you want something that will last years through countless holes, go with Greenlee.
T**E
Great tool
Great product
J**M
works well
Great will buy again
C**E
Good product, bad packaging.
Great product, good value for money. Only issue I had with the set was that when it arrived, the dies had a piece of cardboard above the pointed ends, and they had torn into it, leaving an immense amount of cardboard fibers all over the inside of the case, mixed into all the threads and pre-oiled pieces. It was an absolute mess. Because the fibers stuck to the oil, I had to take everything out and use brake cleaner to get everything cleaned up and then oil it all over again. Other than that issue, I would recommend this set to anyone with similar needs. Ratchet is much cheaper than the pneumatic versions, and honestly not a big deal if you're not doing a lot of holes. I do a lot of service work and getting a new panel to fit an old service entrance can be tricky, but it's much easier with this.
F**S
producto llego de acuerdo a lo especificado
B**N
Good product but the new carrying case is poorly designed, as every time you pick the thing up all the dies go everywhere, had to fabricate something on the inside so once you latched the cover it presses down on the dies so nothing moves when picked up and carried.
A**L
Exente equipo
J**Y
Works great and the price is way lower than any retailer or wholesaler.
L**R
Great buy for work. Was tired of using old beat up Kits at work with missing pieces. Bought this and although initially a little steep you can individually replace anything you need to when needed. Great set from greenlee. Sharp, clean cuts and a sturdy case to store the set in. Impressed
Trustpilot
2 weeks ago
2 months ago